To check if you won a sweepstakes, head to the Rewards Store lobby in-app after the Sweepstakes period has ended.
If you're a winner, you'll see a "Sweepstakes WINNER" Reward in the Store. Claim your prize, agree to the Terms & Conditions, and then you'll receive an email with the next steps!
Once a Sweepstakes has concluded and winners have been determined, they will be announced on the myVIP website.