Hi @CaitlinGewin, would this be for classic or new quizzes? Also I am not sure if that mean there are questions that need to be manually graded, or if the teacher means that the grade posting policy is set to manual. If the grade posting policy is set to manual, then by default students cannot see their submissions or score, for them it shows as "muted" until it's graded and posted. Except for new quizzes: there, the policy must be set in the new quiz's settings How do I manage settings for a quiz in New Quizzes... - Instructure Community (canvaslms.com).
In Classic, viewing the submission also depends on quiz settings. If they have checked "Let Students See Their Quiz Responses (Incorrect Questions Will Be Marked in Student Feedback)" in the quiz settings, then yes students can view their responses even on a manually graded quiz before it's graded. If they haven't checked that, then students will not be able to view the submission whether or not it's been graded and posted.