I used to modify some Atari games so they saved the high scores and they're mostly on the AURA menus over at Mr.Bacardi's site:
http://mrbacardi.atari.org
The games with high scores are the ones with 'plus' after the title (eg: Tiger Attack Plus). They're spread out over the disks a bit but there is a fair few there.
I still have a disk with 4 games on (Dreadnought, Montezuma's Revenge [i didn't know you couldn't complete it at the time!], Whomper Stomper and Knock!) that were never put on an AURA menu.
If anyone's interested in it, and I'm allowed, then I'll put it on here.