scheduler_count in Azure SQL DB
Unfortunately this DMV is not accessible.



Adam Machanic has made a user feedback item, you can cast your vote to urge Microsoft to make it available.

It has been picked up by Microsoft, and has been under review since  april 6 2018.

You could get your DTU count or CPU count, depending on your model from a certain reporting interval from the sys.dm_db_resource_stats DMV.

SELECT  dtu_limit ,MAX(end_time) as end_time 
FROM sys.dm_db_resource_stats
GROUP BY dtu_limit; -- DTU Model


SELECT  cpu_limit ,MAX(end_time) as end_time
FROM sys.dm_db_resource_stats
GROUP BY cpu_limit; -- VCpu Model


The maximum of 5 Dtu's on my basic tiered database is returned by the query

dtu_limit   end_time
5   2019-03-21 19:17:05.237


And as a result of being on the DTU model, VCpu count will return NULL.

cpu_limit   end_time
NULL    2019-03-21 19:17:05.237