Check Schedule Job Status

In SQL Job, we can know which schedule job is running from the below step:
Microsoft SQL Server Management Studio -> Server name-> SQL Server Agent-> Job Activity Monitor->Right click -> View Job Activity

You can view which job is running with check on "Status" column

Another way to do this is run this query in Microsoft SQL Server Management Studio->New query

msdb.dbo.sp_get_composite_job_info NULL, NULL, NULL, NULL, NULL, NULL, 1, NULL, NULL

This script will show which job is running now.