how do i get my w2s if I no longer work at mcdonalds?

They should have been mailed by the end of January.  I'd give it the rest of the week to arrive, longer if you have moved since the time you turned in your W-4 when you started working there.

After that, call and ask them how to follow up and or go to irs.gov and check out what you need to do to get one.