How do I pass a var from one mc to another?

Ok, so I have this little quiz I made in flash and it’s a movie clip. Now I have a variable (score) that I use to tally up the score. What I’m trying to do next is tell ANOTHER movie clip that if the score is a certain number, play a certain frame in the NEW movie clip.

Right? So how do I pass that variable from the one movie clip to another movie clip and tell that clip to play at a certain frame if score=x?

I have to have this done by friday night so if anyone has ideas PLEASE let me know!

Thanks! =)