Received an email to update my address for my Apple Card?

We can't tell from that information. It could be real, it could be phishing.

Scams (e-mail, text messages, and phone calls) are getting very good at closely imitating true Apple communications. Always be cautious. These support articles have some guidelines:

About identifying legitimate emails from the App Store and iTunes Store --> Identify legitimate emails from the App Store or iTunes Store - Apple Support

Recognize and avoid phishing messages, phony support calls, and other scams - Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

Avoid scams when you use Apple Cash --> Avoid Apple Cash scams - Apple Support

Apple 'How to identify, avoid, and report phishing' video--> https://youtu.be/SR3Z3fXXjfw

About Gift Card Scams --> About Gift Card Scams - Official Apple Support

If you are uncertain about a message and a resource provided in that message, do not click on any links in the message. Try to independently verify the resource by going to a support article page on apple.com and use the instructions in the article to verify though Apple itself, or your Apple device features such as Settings or an Apple app, what the message is claiming. To ask Apple start at this web page: Official Apple Support

Forward email attempts as an attachment (in MacOS Mail use the paperclip icon) to: reportphishing@apple.com then delete it.

Possibly. Without seeing what it says, or knowing what address it came from, its impossible to say for sure.

Don't click any links on the email or follow any steps there.

You can get to your cards information following Apple's support document directly.

You can update your Apple Card's information by following the steps in the support document linked below.

click here ➜ Update your Apple Card account information - Apple Support