Why not get the user access to the assessment inside of ServiceNow?  The options to view assessment answers is very extensive and gives them a number of filtering options on correct answers or answers that were flagged.  This would be a better user experience.

Having said that you can export it.  The answers are stored in a table. You may have to create a database view that combines the question and the answer into a single table or you might be able to dot walk it - but I'm going to go back to giving the user access to read it in the ServiceNow platform.