Apple's access to health data cannot be opened with devices.

Since the restriction that you are not allowed to change the access rights is turned on in the "screen usage time" function of iOS, you just need to go to the "screen usage time" and adjust it back.

The steps to turn on privacy rights are as follows: 1. Open iPhone Settings-Screen Usage Time-Content and Privacy Access Restrictions. 2. In the privacy list, just change the corresponding option to "Allow changes".