Email received advising a purchase made from Ap...

I received an email advising an App Store purchase I did not make. It is also referred me to a link asking for personal

information. Is this a real Apple notification or a fraud.

More than likely a phishing attempt. You can tell by the email address it was sent from, and how they addressed you. If it is something like, Dear Customer, or Dear and then your email address, then for sure it is a phishing attempt. Apple will address you by name.