We might need to take full metadata backup from org. So, All you need is a XML package to retrieve metadata either from VS Code or Workbench. I have provided a sample XML package which you can use.
Once you have XML package, You can just paste it in package.xml file in a sfdx project folder. Make sure you have authorised an org from where you want to retrieve or deploy the components.
As you can see in the above image, You just need to right click on package.xml file and you will get an option to retrieve or deploy components defined in xml package file.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>*</members>
<name>ActionLinkGroupTemplate</name>
</types>
<types>
<members>*</members>
<name>ApexClass</name>
</types>
<types>
<members>*</members>
<name>ApexComponent</name>
</types>
<types>
<members>*</members>
<name>ApexPage</name>
</types>
<types>
<members>*</members>
<name>ApexTrigger</name>
</types>
<types>
<members>*</members>
<name>AppMenu</name>
</types>
<types>
<members>*</members>
<name>ApprovalProcess</name>
</types>
<types>
<members>*</members>
<name>AssignmentRules</name>
</types>
<types>
<members>*</members>
<name>AuraDefinitionBundle</name>
</types>
<types>
<members>*</members>
<name>AuthProvider</name>
</types>
<types>
<members>*</members>
<name>AutoResponseRules</name>
</types>
<types>
<members>*</members>
<name>BrandingSet</name>
</types>
<types>
<members>*</members>
<name>CallCenter</name>
</types>
<types>
<members>*</members>
<name>Certificate</name>
</types>
<types>
<members>*</members>
<name>CleanDataService</name>
</types>
<types>
<members>*</members>
<name>Community</name>
</types>
<types>
<members>*</members>
<name>ConnectedApp</name>
</types>
<types>
<members>*</members>
<name>ContentAsset</name>
</types>
<types>
<members>*</members>
<name>CorsWhitelistOrigin</name>
</types>
<types>
<members>*</members>
<name>CustomApplication</name>
</types>
<types>
<members>*</members>
<name>CustomApplicationComponent</name>
</types>
<types>
<members>*</members>
<name>CustomFeedFilter</name>
</types>
<types>
<members>*</members>
<name>CustomHelpMenuSection</name>
</types>
<types>
<members>*</members>
<name>CustomLabels</name>
</types>
<types>
<members>*</members>
<name>CustomMetadata</name>
</types>
<types>
<members>*</members>
<name>CustomObject</name>
</types>
<types>
<members>*</members>
<name>CustomObjectTranslation</name>
</types>
<types>
<members>*</members>
<name>CustomPageWebLink</name>
</types>
<types>
<members>*</members>
<name>CustomPermission</name>
</types>
<types>
<members>*</members>
<name>CustomSite</name>
</types>
<types>
<members>*</members>
<name>CustomTab</name>
</types>
<types>
<members>*</members>
<name>Dashboard</name>
</types>
<types>
<members>*</members>
<name>DataCategoryGroup</name>
</types>
<types>
<members>*</members>
<name>DelegateGroup</name>
</types>
<types>
<members>*</members>
<name>Document</name>
</types>
<types>
<members>*</members>
<name>DuplicateRule</name>
</types>
<types>
<members>*</members>
<name>EclairGeoData</name>
</types>
<types>
<members>*</members>
<name>EmailServicesFunction</name>
</types>
<types>
<members>*</members>
<name>EmailTemplate</name>
</types>
<types>
<members>*</members>
<name>EscalationRules</name>
</types>
<types>
<members>*</members>
<name>ExternalDataSource</name>
</types>
<types>
<members>*</members>
<name>ExternalServiceRegistration</name>
</types>
<types>
<members>*</members>
<name>FlexiPage</name>
</types>
<types>
<members>*</members>
<name>Flow</name>
</types>
<types>
<members>*</members>
<name>FlowCategory</name>
</types>
<types>
<members>*</members>
<name>FlowDefinition</name>
</types>
<types>
<members>*</members>
<name>GlobalValueSet</name>
</types>
<types>
<members>*</members>
<name>GlobalValueSetTranslation</name>
</types>
<types>
<members>*</members>
<name>HomePageComponent</name>
</types>
<types>
<members>*</members>
<name>HomePageLayout</name>
</types>
<types>
<members>*</members>
<name>InstalledPackage</name>
</types>
<types>
<members>*</members>
<name>Layout</name>
</types>
<types>
<members>*</members>
<name>Letterhead</name>
</types>
<types>
<members>*</members>
<name>LightningBolt</name>
</types>
<types>
<members>*</members>
<name>LightningComponentBundle</name>
</types>
<types>
<members>*</members>
<name>LightningExperienceTheme</name>
</types>
<types>
<members>*</members>
<name>MatchingRules</name>
</types>
<types>
<members>*</members>
<name>NamedCredential</name>
</types>
<types>
<members>*</members>
<name>NetworkBranding</name>
</types>
<types>
<members>*</members>
<name>PathAssistant</name>
</types>
<types>
<members>*</members>
<name>PermissionSet</name>
</types>
<types>
<members>*</members>
<name>PlatformCachePartition</name>
</types>
<types>
<members>*</members>
<name>PostTemplate</name>
</types>
<types>
<members>*</members>
<name>Profile</name>
</types>
<types>
<members>*</members>
<name>ProfileSessionSetting</name>
</types>
<types>
<members>*</members>
<name>Queue</name>
</types>
<types>
<members>*</members>
<name>QuickAction</name>
</types>
<types>
<members>*</members>
<name>RecommendationStrategy</name>
</types>
<types>
<members>*</members>
<name>RecordActionDeployment</name>
</types>
<types>
<members>*</members>
<name>RemoteSiteSetting</name>
</types>
<types>
<members>*</members>
<name>ReportType</name>
</types>
<types>
<members>*</members>
<name>Role</name>
</types>
<types>
<members>*</members>
<name>SamlSsoConfig</name>
</types>
<types>
<members>*</members>
<name>Scontrol</name>
</types>
<types>
<members>*</members>
<name>Settings</name>
</types>
<types>
<members>*</members>
<name>SharingRules</name>
</types>
<types>
<members>*</members>
<name>SiteDotCom</name>
</types>
<types>
<members>*</members>
<name>StandardValueSetTranslation</name>
</types>
<types>
<members>*</members>
<name>StaticResource</name>
</types>
<types>
<members>*</members>
<name>SynonymDictionary</name>
</types>
<types>
<members>*</members>
<name>TopicsForObjects</name>
</types>
<types>
<members>*</members>
<name>TransactionSecurityPolicy</name>
</types>
<types>
<members>*</members>
<name>Workflow</name>
</types>
<version>46.0</version>
</Package>Resources on XML Package to retrieve metadata
- SETUP YOUR DEVELOPER ENVIRONMENT FOR LIGHTNING WEB COMPONENT
- Salesforce package.xml Builder
Org Development Model with VS Code
