Transfered into iphone 13 pro 256gb and my system data is 98gb any suggestions?

Welcome to the Apple Support Communities.

Most likely, your iPhone is still calculating the storage, and that is currently inaccurate. If it doesn't change, Restart your iPhone - Apple Support and make sure iOS is up-to-date: Update iOS on iPhone - Apple Support.

It may also help to see: How to check the storage on your iPhone, iPad, and iPod touch - Apple Support.

Jack

I’m having the same issue except my system data is 101GB. Restarting my phone didn’t help and my phone is up to date. Can’t find any resources that actually help

Thank you so much! that worked. it fixed my phone storage and you are seriously my favorite person right now!!!