Cannot reset security questions of the Apple ID

What happens when you try? Error message(s)? More information would help.

If you are being told there isn't enough information to reset them, contact Apple ID Support.

From the article below. 

Without proof of your identity via security questions and other carefully selected criteria, Apple Support can't help you reset a password or perform any other actions on your account. These policies are audited and reviewed on a regular basis.

Security and your Apple ID.    

Apple ID - Official Apple Support.    

Contact Apple for help with Apple ID account security - Apple Support.   (Link doesn't always load)  

Get Support    Work through the screens to get a chat option. 

https://twitter.com/AppleSupport

Or fill out and submit  iTunes Store - Contact Us - Official Apple Support    The form is for iTunes, but will get passed to the ID Support section. 

Briefly, to remove the activation lock you will need to have the Apple ID password used by the person setting the device up prior erasing it. Otherwise, we can't help with activation lock, and Apple support will not help unless there are extenuating circumstances (e.g., you have the receipt for your purchase of the device with its serial number on it or a court order instructing Apple to assist in the provision of access to a decedent’s information from the deceased person's accounts). To deal with the possibility you have an extenuating circumstance, use these support options:

Get a call from Apple support to help solve your problem using this link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Apple ID Support https://support.apple.com/apple-id

Apple ID account security for country-specific and

region-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help  https://getsupport.apple.com/. Go

through the options to find the best support option.

You are welcome.

You are very welcome. You stay safe too.

You are very welcome. Be safe.