How can I reset Apple Account security questions?

If you do not know them you cannot reset them anymore. Change to two factor if you can.

Several years ago Apple transitioned to using two factor authentication instead of security questions. You can continue to use security questions if you already use them and they are working for you, but if you have problems then they no longer get direct support. You can try the directions in this support article If you forgot the answers to your Apple ID security questions - Apple Support but the article is labeled "archived" and may contain information that no longer applies. If the instructions work then fine; if they do not (e.g., you see “not enough information”*) then you will have to change to the newer security method if you can. Over the past few years Apple has been persistently encouraging users to switch to the newer two factor authentication security system. For those who have disregarded their encouraging, Apple will likely only help you to now change to two factor authentication, if even that is possible. Follow the instructions in the "Turn on two-factor authentication for your Apple ID" section in this support article --> Two-factor authentication for Apple Account - Apple Support to try to change to two factor authentication.

If you still need help, contact Apple Account support at this link ➞ https://getsupport.apple.com/?caller=cups&PGF=PGF63005

Select "Other Apple Account Topics", then "Security concerns or account compromised." This will give you a chat or telephone call option.

If Apple can not or will not help you transition to two factor authentication then it is quite possible you will have to simply abandon the old account and everything it contained.

Good luck!

*See the third page of this discussion https://discussions.apple.com/thread/254831093 Some people talk about getting out of a “loop” by logging in a different way. I am not really following what they are talking about but maybe you can see if it helps.

Apple won't "fix" it no more than my city will fix the absence of horse hitching posts and watering troughs along the street. Apple stopped using security questions several years ago. If you have been ignoring their constant nagging to change to two factor then you are accepting responsibility for anything that happens because you are using security questions.

The problem is, people want services that require a lot of security. You may complain here about the security questions but that is nothing compared to what we see when somebody has somebody else get into their account and steal their identity and their money and locks them out of their equipment. This is the 21st century and all the big organizations are requiring two factor. Apple doesn't mandate it on old accounts though, unlike some. They do encourage you to use it though, and cut you off from some services if you do not.

I suggest you go back and read what I posted earlier. I even posted a link to where somebody said they got out of the "loop", though I don't really understand what they were doing. Failing that, what did Apple say when you called them using the information I provided earlier?