Please see the additional articles available regarding the New Quiz experience.
If not all quiz questions are set to “auto-graded”, scores will need to be manually published into the grade book.
Click on the drop-down menu arrow next to Submit in the top menu bar and choose Quizzes.
Select the down arrow next to the quiz you wish to mark and select Grade.
On the Users tab, select the Select all rows check box to select all the quiz attempts.
Select Publish Feedback.
In the pop-up window, select Yes to publish the quiz scores to the gradebook.
...