Does anyone know how to get a
Contact BuilderContact ID, ContactKey using Query? Is there any DataView to get a Contact Builder Entire Population?
I don’t see any documentation on the matter.
You can’t retrieve Contact records from a query or AMPscript. You would need to use the REST API Contacts Search method to retrieve these values.
If you can provide some further detail on your use case, then I would be happy to expand my answer and provide possible solutions for you.