Must have missed this one

sorry
According to the license you can have one private test site for testing anything you like, but it must remain private.
You wont be able to just use it, vBulletin's template system is rather differnt.
That said, for the the style you would either need to port it over your self or pay someone to do it for you. But its more than possible to make vB look realtivly the same with some work.