A few of the lesson quizzes in this course appeared in previous courses. Therefore, you may have already completed the required quiz with a successful score. Those scores should still be valid.
If a quiz score for a previously completed quiz does not appear in your grade book it may be because you were using a different account email when you completed that quiz. You can either provide us with the other email address that you used, or send us a copy of your quiz completion email.
Thanks!
Matt Kelsch