Need to know what $7.78 monthly deduction is fot
What is $7.78 monthly deduction from Apple is for
iPhone 7, iOS 14
See your purchase history in the App Store or iTunes Store [iOS, computer, or web] - Does not include purchases made by others under Family Sharing; those have to be checked from their accounts.
http://support.apple.com/HT204088
If you see ‘itunes.com/bill‘ or an unfamiliar charge on your bank, credit card, or debit statement - https://support.apple.com/HT201382