I received an email from Re : [ Reminder ] [Summary Update Alert ] New Statement check your account for verify [ Date Update Confirmation ] A stating my account had unautorizied sign in and to re submit my account details.

It's a Scam.

Apple provide guidance in these documents but the key factors are … Apple will always address you by your name or the name they know you by and that email will always come from an address that ends ‘@apple.com’. It goes without saying that the Grammar and spelling is always correct.

Never click on any links within an email that you suspect. These are the Apple documents.

What to do about phishing. https://support.apple.com/en-us/HT204759 … which also tells you where to forward the copy eMail.

How to identify scam mail https://support.apple.com/en-gb/HT201679