You won’t get a tyre. When the race weekend is over, all of the tyres are returned to Pirelli, who take them back to their factory and run a diagnosis on them to make sure there are no defects in them; they usually get destroyed or put into storage to keep them from being acquired by rival tyre developers.
As for the wheels, I believe they’re kept by the teams. The only way you could get one is if you were attending an event and a car crashed and you were able to get the wheel rim. otherwise, check eBay – but you can expect to pay thousands of dollars for it. Tyres and wheels aren’t exactly the kinds of things that are readily available.