can you share apple tv if you don't have an apple device

At least one person in the Family Sharing group should have an Apple device (iPhone, iPad, iPod touch, or Mac). That person can then be the ‘organizer’ of the group. The organizer and the Apple TV+ subscriber do not have to be the same person.

About Family Sharing - Apple

Learn more about what you can do with Family Sharing - Apple Support

Set up Family Sharing - Apple Support

Add a family member to your shared subscriptions - Apple Support

one needs to have an appleID but that does not require an apple device to create

How to create a new Apple Account - Apple Support