I thought I did pretty well I got 4 questions wrong and it still wants me to do it over. What score do you have to actually get to pass it to the point where it says you can go onto the next lesson of scales lesson 4.
In lesson 4, the "pass" level is 90% of good answers out of the 25 questions (whereas in lessons 1 to 3, the "pass" level is 80%). So you have to make a maximum of 3 mistakes to be able to move over to lesson 5, which means you're pretty close .