While that address is in use by Apple, the From-address can be spoofed, so something else might be going on. It is good to be cautious. Try hovering over the links in the message, without clicking. See if that reveals a non-apple domain, which would be suspect.
It is odd to receive it without purchase, as the offer is for buying a new iPhone, iPad, iPod touch, Apple TV box, or Mac. Apple TV+ - One Year Offer - Apple. The offer would have to be redeemed on the new device within three months, so you wouldn’t be able to redeem without said new device.