Union copyright and payment method question

I am making a game to sell on union but have some unanswered questions. I did send a message to (union@unity3d.com) and have gotten no response in 2 weeks. I have 2 questions. does union copyright your work or do you need to?(if so whats a good way to copyright it?) and how does union pay you, with paypal?

Would expect you'd have to copyright especially sense it costs money and you'd need sensitive data I'd expect.

And you have to discuss payment with them, but PayPal is probably a way.

Whenever you produce any work it is intrinsically copyrighted to you. Registering your copyright is what you need to do with the copyright office. I can’t imagine that Union is interested in the business of registering your copyrights for you.

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