You don't have any.
Here's how it's supposed to work.
Dealer: Please sign this contract.
Buyer: I see there is only one copy. Please bring out a duplicate so we can sign both and I can take a copy home with me.
Dealer: Oh, don't worry about that. We'll send you one.
Buyer: No duplicate. No deal. I'm outa here.
That you didn't get a copy of your contract when you signed it is nobody's fault but your own.
Anyway, you have it now.
Read it and understand it. Which is what you should have done before you signed it.