Best Way to Determine if a Table has a Long Running Transaction

I need to be able to iterate all tables and issue a TRUNCATE command, however, I don't want the loop to be held up by blocking. Essentially, I am looking for the best way to determine if a SCH-M lock can be obtained prior to issuing a truncate command. >Microsoft SQL Server 2019 (RTM-CU26) - 15.0.4365.2 (X64) Standard Edition (64-bit) on Windows Server 2016 Datacenter 10.0