CustomUI is a UI mod that adds some buttons on the bottom toolbar, one of them is for a "Scripts" menu:

https://moi3d.com/wiki/MaxScriptArchive

Look for CustomUI.2.0.beta2.zip near the top


Or also here's one with just the menu:
http://moi3d.com/forum/index.php?webtag=MOI&msg=10353.1

- Michael