Does the right upon a child by a parent include having access to their home? If the parent is living with their child, do they have the ability to go into their child’s room and go through their belongings?

What age child and what is the purpose of the parent going through the child’s belongings? If they are going through their child’s belongings in order to make sure there are no issues they need to correct due to their care for their child it is fine. Obviously for cleaning purposes is fine as well