not able to sign out of icloud on iPhone

Check Settings > General > VPN & Device Management and check if there is a profile there, if there is that may be restricting you. If there isn’t anything there then try turning off Screen Time.

Marciemarcie Said:

"not able to sign out of icloud on iPhone: My iPhone X says unable to sign out due to restrictions. I do not know why there would be restrictions and why I can't sign out."

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Unable to Sign Out of iCloud:

Is this a used iPhone? If so, return it to the seller. This is the link the seller should have prior to selling it to you: What to do Before you Dell, Give Away, or Trade In your iPhone or iPad - Apple Support