In American roulette, which has 38 pockets numbered 1 to 36 plus a 0 and a 00, the payout for a straight up bet on 00 is 35 to 1. This means that if you place a bet on 00 and it hits, you would receive 35 times your original bet as a payout.
It's important to note that the presence of the 00 pocket increases the house edge in American roulette compared to European roulette, which has only one 0 pocket. The house edge in American roulette is approximately 5.26%, while the house edge in European roulette is approximately 2.70%.