I'm not sure if Scripts is covered, but you can request notifiers for most menu events. If you look at AIMenuCommandNotifiers.h you'll find a list of menu commands and a couple of examples of how you would construct a notifier to hear about those menus being clicked.
That said, I don't know if anything in the Scripts sub-menu is covered. Most of File's items are though so maybe. It's fairly easy to try this and see though.