I understand that after getting your screen repaired at an Apple Store, your Touch ID has not been working. I'm happy to provide some help for this issue.
First, I recommend going through the steps here:
Get help with Touch ID on your iPhone or iPad - Apple Support
If you continue to have this issue after going through that article, I recommend that you schedule another appointment at the same Apple Store for them to follow up with the repairs performed.
Thanks for using the Apple Support Communities. Cheers!