Touch Bar not working after screen replacement

Hello all, recently I had an issue with lines appearing on my screen and no matter what I did, they wouldn’t go away so I went to check on the issue. Even though I have never ONCE dropped or even bumped my computer, I needed a new screen. I went to get the screen replaced for a hefty chunk of change that made me cry a little at a certified service store and I just picked it back up but now my Touch Bar won’t respond! Is there a way to reset it or is it just broken now and I have to spend even more money to fix it even though it was working just fine before I got the screen changed. Honestly, I’m extremely frustrated that I’m having to do all this considering I take VERY good care of my electronics. Please help!