Seems like you were frustrated when you made that question, so I’m gonna start off with just a basic request – please try to remain respectful. You’re asking for help, and people are less likely to give it when you come off aggressive.
That being said, you can’t array to vertices of a circle. Instead what you are supposed to do, which was demonstrated in the tutorials, was to create an empty then array around that empty which you rotate to the desired angle.
If any of what I have said doesn’t make sense, I suggest you re-watch the tutorials leading up to the exercise, as they lay out all of the methods you would need to complete it, very clearly.
