With Nintendont you can force Progressive Scan on pretty much all GC games. You can force PAL60 Modes in some PAL games, but it doesn't always work. You can also use patches I made long ago for a handful of games, it's as simple as applying the patch on the ISO, and play them through Nintendont (forcing 480p) and then they play normally.
Here's the link to the old thread:
https://gbatemp.net/threads/patches...s-into-pal-60hz-nintendont-compatible.437896/
Why exactly are you looking to play PAL games? Depending on what are we talking about, it might not even be worth it trying.