I received an email and want to know if this is fake or real?

First, you never click a link in an email.

If you order something from Apple you can sign in on the site you made the purchase to find your order details.

If you received an email from anybody about an order for anything that you do not order, it is a scam. They want you to click a link or call a fake number that they provide. Once that is done, they will request your Password or other personal information to supposedly look up your order, but in reality you have just given someone else information to compromise your accounts.

Since you did actually find an order in your account, it means someone knew both your Apple ID and password. They then ordered an item (I presume an iPhone, Mac or something else expensive) and set it up to have it shipped to them.

If anyone has the correct credentials, there's no way for the system to know it isn't you that's logged in. It's the same with stolen credit card info. If a person has your name, card number and the three digit code, any web site is going to assume the purchase is legitimate.

It's the most important reason simple, or easily guessed passwords should never be used.