Help a n00b install SD who keeps getting error messages.

And please explain what I need to do as if I'm five years old with no prior knowledge of coding or how any of this all works under the hood. I'm good at following directions, even if I don't fully understand what it is I'm doing when I copy/paste commands. I'm trying to install SD to my PC with an RTX 3060 gpu and no matter how many YouTube guides and Google searches I do I keep running into the same error message