Glad that you are paying attention to your quiz results!
The only way you can take a quiz more than the built-in 2 attempts is if you get reset to an earlier point in the course. This usually only happens when a student hasn’t made the necessary scores for MST Certification on an exam (module, midterm, or final).
At this point your scores are great. The important thing is to look at any questions that you’ve missed and figure out the correct answer, either on your own by looking at the course material again, or by asking for help in the forums.
Let me know if you have any other questions!