Apple ID: Account Details Unavailable, settings greyed out

Make sure you have Screen Time not restricting access at Settings > Screen Time > Content & Privacy Restrictions > Account Changes, This should be set to Allow.

Re: "Apple ID: Account Details Unavailable, settings greyed out :

My Apple ID is signed in, but Sign-In & Security and iCloud are greyed out. It says ‘Account Details Unavailable’.

You may have ScreenTime restrictions in place:

Se what to do: If your Apple Account is grayed out in Settings, or you can't sign out - Apple Support

Else: Wondering which device or Mac you are using, and which OS version is installed.

Keeping OS version up-to-date often sidesteps issues that may arise. (Wise to back-up data first if updating OS)

If you haven't already:

You may want to try Logging in to your Apple Account online : https://account.apple.com/

There may be an explanation there,

or you may be able to check and / or update any necessary details there.

if you forgot your Apple Account password. see if you can reset it.

Eg: Try online at https://iforgot.apple.com/

or

See what to do if you see a message that your Apple Account is locked, not active, or disabled.

__________________________________________________________________________

Re: I cannot set Account Recovery because the menu doesn’t open. how do i fix it"

Account Recovery can be used if all else fails:

Eg: You can gain access on the internet via https://iforgot.apple.com/

Suggestion: Scroll to "Before starting account recovery" in the article below for all the tips there:

See: How to use account recovery when you can’t reset your Apple Account password - Apple Support