How do a address a fraud claim that says I purchased Fortnite? I did not give authorization. Do I just delete the e-mail after I check my credit card transactions?

How do I ensure that an e-mail I rec'd (see below) stating I bought an app (I did not) is not validated? After verifying my credit card transactions can I just delete the e-mail? I did not download any invoice. Where can I report this?

"Dear Apple Customer,Your orders of "Fortnite" has been successfully paid. Your invoice orders is attached on this email, Your payment has been charged from the credit card linked with your account.To view, manage or request a cancellation for your orders. Please download and follow the instructions on the invoice.Thank you again for shopping with us......Sincerely,Apple Support"