Only the products/technologies listed at the right are supported in Microsoft QnA at this time. Other forums will migrate to QnA during 2020, but for now most of the MSDN (and TechNet) forums are still active. You should ask your questions in the existing forums for the subject areas you listed.
For example, theses forums:
https://social.msdn.microsoft.com/Forums/en-us/home?forum=csharpgeneral
https://social.msdn.microsoft.com/Forums/en-US/home?forum=vbgeneral
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?forum=sqldatabaseengine