Why is there a $3.38 credit card transaction in my Apple Account?

It may be the case that your card number has been compromised. This happens frequently when the physical card is used on a terminal that someone installed a skimmer to read your card details. Most common at fuel stations and ATM's where the scammer has all night to tamper with the terminal and little interruptions. Contact your bank to dispute the charge and they will most likely issue you a new one as well.

Yes, Jim is correct, your card was either skimmed at an ATM, merchant terminal or involved in a data breach. The scammers then used the card to make purchases from Apple.

Is it an ATM card or debit card? They are two entirely different payment methods. Debit cards will have the name and logo for the Payment Network Operator (Visa, MasterCard, etc.). Does your card have a PNO logo on it?

GearTheWorld wrote:

Maybe,

What could possibly be $3.38 ?

Anything that is $2.99 with a 13% tax rate including VAT.