I've been looking to learning speedrunning for this game for ages, but the latest guide that's up is for pc version. I've googled but I can't find where to get this version of the game, any help?

If you check the description in that video it has a link to the discord channel with the guide for the ISO and the guide to getting it to run on windows 10

Or you can just join the discord and scroll up in the phantom menace channel and I have a post with the links. The youtube video has a direct link to the post though so you wont have the search the channel