how can i check my in-game purchases on my app store? i did buy some token in-game but i forgot the amount and i need to pay it so that i can be able tu update/download using my apple id

When i try to update my game, it say "Your payment method was declined, please enter another payment method". Before this i did used the same debit card to purchased in-game token with not enough money on that bank account but still success on purchasing that token..then the next month i put enough money to my debit bank account so that will be deducted..then the next purchases i do the same and put some money to that bank account but still decline..i dunno how much token i buy last time so i need a guide how to check my in-game token i did purchased because i forgot the amount.