security questions for Apple ID

If you don't have enough information to reset your security questions then your only possible option is to see if you can upgrade to Two-Factor Authentication (2FA) which will erase the security questions permanently. Then your problem is solved.

If you are currently signed in properly on your device you can usually do this 2FA sign up.

https://support.apple.com/en-us/HT204915

If you cannot upgrade to 2FA and are still unable to provide the information required then you will not be able to reset your security questions.

Contact Apple ID Support for assistance.  See the Apple Support articles below for contact information.  

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. You may have to pick a slightly different problem.

Apple Support schedule phone call

https://twitter.com/AppleSupport.          People have posted it may take an hour or more to get a response.

From the Apple Support 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 Support.      

Based on multiple posts I have read, they will not help you recover the answers to your security questions.