Delete account will game progress still be there

See here for instructions on how to remove a child account from your family: http://support.xbox.com/en-US/xbox-one/security/remove-family-member

Keep in mind that after the child account is removed, it will not be able to use Xbox Live until they are added to another family account.

If I was to do it again and delete apps and games would it get rid of all my progress and all the games i purchased on my xbox account? Or can I just redownload them and all my saved progress is still there

You were not required to immediately migrate your account or delete your Microsoft account, and you still had 60 days to recover your account. As you have deleted the account, I am afraid that it will not be possible to recover the account, neither the game nor your progress.

Hi AngeloD'Orazio! My name is Ricardo an independent advisor ready to help you with this situation!

Do you mean your saved progress right? Not delete your account, as the account has the game linked to it, there's a way to delete the cloud saves that should delete the game progress

Will delete the content on the console only if you choose that option, progress on games are tied to the account so once you add the account back you will have all your games progress