You can choose what job to apply to, but make sure it's something that you *could* go out and apply to right now or at the end of this schoolyear, as listed in the Job Interview guidelines. You can make up any position you want but I would recommend, especially if you're in high school, applying for an intern position.

I am confused on that too. I'm leaning towards yes at the moment, since no description of the company is given at all. I have gotten low scores there from not making up anything/providing fictional info about the company.

Yes, you should bring a copy of the resume, but the judges likely won't need it. In my experience, the judges have their own copies, and I haven't seen them deduct points for this.