Not an offical version, but there may be a bootleg one around (though I have never seen or heard of it). For a complete list of games for the Neo Geo, take a look at the Master list on this site. If you find a Ms Pac Man someday though haha, let me know where, cause I want one too!!!
If Ms. Pac Man is JAMMA, you should be able to unplug your MVS unit from the JAMMA harness and plug in the Ms. Pac Man PCB. I use an HGA though, and don't know how dedicated MVS cabinets work, but I assume how the MVS connects is the same way.
As for an actual Ms. Pac Man MVS cart, I doubt you'll find one, unless someone made a hacked version for whatever reason like Nick said.