I got one year free , how can I activate it
How can I activate the free one year offer
iPad Pro, iPadOS 14
The year offer is for users that bought a new iPhone, iPad, iPod touch, Apple TV box, or Mac,
and redeem that offer within 3 months on the new Apple device.
Apple TV+ one year offer - Apple
If you qualify, and if you did as described in the guide, and you still do not get to see the year offer, then contact Apple Support. They can assist in getting you the service, if needed using activation codes.