How do you get 1000000000000000000000000000000000000000000000000 coins on subway sufers for iPad?

To get an enormous amount of coins like 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 in Subway Surfers is not possible through legitimate gameplay, as the game has a cap on how many coins you can collect. Cheating or using hacks to modify the game can lead to account bans and is against the game's terms of service. It's best to enjoy the game as intended and earn coins through regular play.