I have loaded Metro Bundler but can't get to IOS Simulator

I have an older MacPro (2012) running Catalina can’t load bigsur but need IOS Simulator to continue with my lessons. Also running on PC simultaneously and get to Metro Bundler but running IOS Simulator just produces a small Info window saying “Attempting to open a simulator…” On both machines the browser did open up a localhost browser port so that was good.

Can anyone help with these issues so I may continue with my lessons? How would I load XCode on a PC? I didn’t see it in the Chrome Store. Help!

Biz