how can i get my 1 free year of apple tv

Redeem the offer in the TV app on your new iPhone. Find “Enjoy 1 Year Free” there.

Read here in more detail how to redeem: Apple TV+ - One Year Offer - Apple

Read here about the conditions: Apple TV+ one year offer - Terms and conditions - Apple

Read here if you have trouble redeeming: If you can't redeem your promotional trial of Apple TV+ - Apple Support

If you can't redeem your promotional trial of Apple TV+ - Apple Support

↳ 5. If you tried these steps and you still can't redeem the offer, contact Apple Support.