Car has no electrical function that works on 1993 Audi 90 Quattro

My car has no electrical functions that work drove car yesterday than last nite went to go and nothing is working with or without key on

Did you check you battery? it may be dead. I would start there.
2 more answers
First thing is the car drove but none of the electrical components would be a sign of the alternator being toast and then you where probibly draining the last of the battery. I'd recommend trying to charge your battery and if you can get you to an autoparts store they'll test your charging system for free
Check the main fuse box location and see, if the switch fuse, or the ECU fuse