There is no button remove from family in my iphone

Hi there JamesPham,

Welcome to Apple Support Communities. Thanks for reaching out to us with this issue you're having with Family Sharing. We're happy to help. So we can find the best path to a resolution, we'll need a little background info. Are you the Organizer of this Family Sharing plan? Is the member you're attempting to remove above the age of 13? Get back to us with that info, and we can go from there.

We look forward to hearing back from you.

Have a great day!

Hello again JamesPham,

Thanks for the follow-up info. Any family member under the age of 13 cannot be removed from a Family Sharing plan. You only have the ability to move them to another family group, or delete their account. The steps to do so can be found here:

Move a child to another group using Family Sharing

Let us know if you have any questions.

Cheers!