You can only see the grades when they have been released by the instructor. To see your grades, click on the "Grades" tab in the top right corner and you will find a breakdown of all the graded assessments and their weight for the course.
The grade along with feedback/feedback file (if applicable) will also be posted at the bottom of the assignment submission page.
If the instructor has posted a note saying the assignments are available but you don't see your grade, please contact your instructor. In your communication, be sure to include your NetId and which assignment you cannot see.