Change your Apple ID security questions

For the security questions, if you are being told there isn't enough information to reset them, contact Apple ID Support, although based on multiple posts I have read, they will not help you recover the answers to your security questions.

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. 

Apple Support schedule phone call. -

Apple on Twitter

Messages chat with Apple

Read again -> Related Article

Change your Apple ID security questions

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Change your security questions

1. Sign in to appleid.apple.com.
2. In the Sign-In and Security section, select Account Security.
3. Under Security questions, select Change security questions. 
4. Choose your new security questions and their answers, then select Update.
5. Enter your Apple ID password, then select Done.

It's very important to remember the answers to your security questions to avoid being locked out of your account. And make sure that you add and verify your rescue email address. If you forget the answers to your security questions, you'll need a rescue email address to help you reset them. Learn what to do if you forget the answers to your security questions.

See also -> If you forgot the answers to your Apple ID security questions

👉 Reset your security questions

1. Go to iforgot.apple.com.
2. Enter your Apple ID, then select Continue.
3. Choose the option to reset your security questions, then select Continue.
4. Enter your Apple ID password, then select Continue. 
5. Follow the onscreen steps to verify your identity. The information you’re asked to provide may vary based on your account details and other factors. If you don't get any options to verify your identity, you can't reset your security questions at this time.
6. Choose new security questions and answers and select Continue. See our tips for choosing security questions and keeping your account secure. 

After you reset your security questions, you might want to set up two-factor authentication instead. It's the best way to keep your account secure, and you won't need to remember any security questions. You can set up two-factor authentication right from your iPhone, iPad, or iPod touch with iOS 9 or later or your Mac with OS X El Capitan or later.

If you answer your security questions incorrectly too many times in a row, you temporarily can't use your security questions. Try to reset your questions after the waiting period ends.