Where can I find more about Apple auto debit with Touch 'n Go eWallet?

You can read further about the Apple auto debit with Touch 'n Go eWallet in the auto debit section within the User Terms and Conditions here

Find out more on exclusive promotions and new features, such as subscription management and billing history, in Apple Zone.

You can click on Apple Zone in the main page upon opening Touch n' Go eWallet.
You can also enter Apple Zone by clicking 【More】 at the Touch n' Go home page and find 【Tickets & Entertainment】 and click on the Apple icon.

Visit the Apple Zone FAQ page for more information.

Below are the articles that may be useful for you :

What is Apple auto debit with Touch ‘n Go eWallet?

Are there any additional fees when using Touch ‘n Go eWallet for App Store and iTunes Store purchases?

What is the wallet limit for Apple auto debit with Touch ‘n Go eWallet?

Can Touch ‘n Go eWallet be used for App Store and iTunes Store in other countries?