Who are these scripts for? You need to troubleshoot performance problems with SQL Server, and you need to do it now. You don't have time to track down a bunch of DMVs, figure out Extended Events, ...
max_server_memory_mb - (Optional) Maximum amount memory that SQL Server Memory Manager can allocate to the SQL Server process. Possible values are between 128 and 2147483647 Defaults to 2147483647.