I don't have a apple device how can I access my family share tv invite

Hi ImEmmy,

Wondering which device you received the invitation on (PC ? Tablet ? Android phone ?)?

To use Family Sharing, you need an Apple ID, and you must be invited to join a family group.

Your Apple ID is the account that you use to access all Apple services

How to create your Apple ID if you do not have one::

https://support.apple.com/en-au/HT204316/

If you already have an Apple ID

How to sign in with your Apple ID

https://support.apple.com/en-au/HT204053

Use Family Sharing to share iTunes Store purchases on PC

https://support.apple.com/en-au/guide/itunes/itns42f7b0d0/windows

Need more ?

Family Sharing website

https://www.apple.com/family-sharing/

Hope this helps you :)