How to reset security questions
I know my password but can’t remember any of the three security questions and I’m trying to transfer all my messages to the new phone from previous phone
iPhone XS, iOS 12
See if you can reset them : If you forgot the answers to your Apple ID security questions
If you can’t reset them yourself contact Support in the country where you live (and which is therefore the country on your account) and see if they can reset them for you : http://www.apple.com/support/itunes/ww (click on your country's flag, the country where you live, and which is therefore the country on the account ; click on Contact Support towards the top right ; click on Get Help under 'Talk To Us’)