I can't access the 1 year free of apple tv on my ipad. I only see offers for 7 day free trial?

Read here how to redeem (and who qualifies): 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.

This is a user forum. You would need to contact Apple support so they can review the situation and give a code if necessary. Please use the link above to get in touch with them.