I don't suppose you know anything about linux at all?
This bit doesn't make any sense to me (installing all the requirements to get my Ubuntu OS ready to install some bits I need)
https://ibb.co/Hxg0WmB (to see the stuff I'm being asked to do)
I don't understand what a global variable is, or what a .zshrc or .bashrc is, or how to open the .profile file.
I realise this isn't the best place to ask this, but if you don't ask you'll never know.