Just did a quick Amazon search. This looks good!

YWXTW Camera Screen Protector Compatible with Samsung Galaxy Z Flip 3 2021, Upgraded High Definition Anti-Scratch Case Friendly Tempered Glass Camera Cover, 2 Sets (Black) https://www.amazon.com/dp/B09DSKBFV8/ref=cm_sw_r_apan_glt_fabc_3YSF8W90Q02RQ55K31WV