To add Microsoft Store applications to Intune, you must connect Microsoft Store for Business and approval applications.
Click on "Tenant administration" > Click on "Connectors and tokens"
Under "Connectors and tokens" > Click on Enable > Click on Save
Once you have enabled Microsoft Store for Business > Go to https://www.microsoft.com/business-store > Click on the application and click on "Get the app"
Once the application is sync to Intune you and now deploy the application