Every redemption (cash, crypto, and gift cards alike) is delivered as a code or voucher to your registered account email. You don't enter a wallet address or any other destination when you cash out.
Because of this, keeping your account email correct and verified is what makes sure your payouts reach you. Update it under Account → Settings → Email (see How can I change my email address?), and check your spam or promotions folder if a code doesn't appear.