iPad Pro Wi-Fi, iOS 11.2.6
It's a phishing email (genuine iTunes emails will address you by name, and include your billing address, and are grammatical without spelling mistakes ) - you could forward it to Apple : reportphishing@apple.com , and then delete it.
Phishing and similar emails : Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams - Apple Support
Genuine iTunes emails : Identifying legitimate emails from the iTunes Store - Apple Support