How can I delete.remove or change the family organizer guardian that was put on my 9 year old sons iPhone XR if I which will is the mother of my son and who paid cash for a new iPhone XR myself.the organizer was done by child who can’t remember info.

Also see

Family Sharing -  Transfer a child to a different family group - Apple Support   

If necessary, contact Apple ID Support for assistance.  See the Apple Support articles below for contact information.  

Apple ID - Official Apple Support.   -

Contact Apple for help with Apple ID account security - Apple Support.  *   (Link doesn’t always load)  

Get Support      -    Work through the screens to get a chat option. You may have to pick a slightly different problem.

Apple Support schedule phone call.   -

If necessary, try Twitter

https://twitter.com/AppleSupport.    -          

Hello Candygirl8383,

Thanks for using Apple Support Communities! It looks like a child set up Family Sharing on their own, and you'll need to see how to remove it. We're happy to do what we can to help.

A few things to know about Family Sharing and Screen time, which should help:

If they set up a Screen Time passcode, the iPhone will need to be erased and set up as new. Setting up from the backup brings back the passcode.

If you forgot your Screen Time passcode

If the kids are under 13 and used their own Apple IDs, they will need to be moved to another Family Sharing group. If over 13, or used a birthdate to make them older, then the Family Sharing group can be disbanded.

Leave Family Sharing

If you discover that they need to be moved to a different Family Sharing group, you can make a new group with your iPhone and move them to the new group.

What is Family Sharing?

Set up Family Sharing

Take care!