Having seen your screenshot prior to deletion, it is almost certain to be a scam. In all likelihood, nothing has happened.
See >>> Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support
Don’t respond to, or engage with, the message. Certainly do not, under any circumstances, attempt to contact anyone using the contact details that may have been provided. Frauds of this nature are designed to scare the unwary into giving away sensitive information - or to fool you into doing something that you shouldn’t - usually to defraud you financially.
In this case, the “bait” is a large transaction - and an invitation to challenge the payment using the provided contact telephone number. Don’t take the bait; don’t call the number.
If you do call the number, you will invariably be asked to provide your Credit Card and other financial information - supposedly so that the transaction can be stopped. Until you give away this information, the fraudster doesn’t have it. If you do give them information, this information will be used to commit fraud.
If you are concerned that your Credit Card or bank details are in the hands of a fraudster, tell the Card Issuer, and your bank - and not the fraudster!