Hello there Hi4647,
Thanks for posting here on the Apple Support Communities! This is a place where other Apple users can submit questions or respond to others to help lend a hand.
We see you appear to be missing progress in a game linked to the Game Center. Let's take a closer look as we do our best to provide some additional insight.
To get started, Apple does not have any access to your data or game information in any way. With that said, be sure to review the steps here to make sure your Game Center data is set to properly sync:
Access your Apple Arcade gameplay data on all of your devices
If issues persist, then you may need to contact the app developer for additional help: How to contact an app developer
We hope this helps get you pointed in the right direction.
Take care.