Hi Tara!
You can certainly add a Results score and modify the amount of points each question is worth. Say there's 20 questions, each worth 5 points. There's a total possible 100 points to get 100%. You know that if you roll the maximum of 6 each time you roll, you'll still need to roll the dice at least 4 times (6+6+6+6=24) to get to the end of the game (Question 20), so you don't want to set your score any lower than 20 points, or 20%. You'd basically need to set that (20%) to be your passing score, because if you set your passing score to be say, 50%(50 points) then if they happen to roll all 6's and get only 4 questions they wont be able to score that many points. So in this case, I would say you set each question to be worth 5 points (if you have 20 questions - this equals 100) and then set a passing score of 20. Since, as mentioned, the questions will be gone through randomly, there's really no other option i can think of right now to set the score.