TikTok coin is not recharging from my Apple ID

The message is pretty self-explanatory. You have reached the limit of spending you can use with your mobile billing method and you need to add a different payment method.

Add a payment method to your account. See this article about payment methods that you can use with your Apple ID --> Payment methods that you can use with your Apple ID - Apple Support then see this article about how to add a payment method to your Apple ID --> Add a payment method to your Apple ID - Apple Support