You can see grades for all of your courses or one course at a time.

Learn more: https://help.blackboard.com/Learn/Student/Grades

Transcript:
You can see grades for all of your courses at once, or one course at a time. Let’s take a look.
First, you can see your grades for all the courses you are enrolled in by selecting the My Grades link on the My institution tab, or by accessing the Global Navigation menu, and selecting My Grades.
When you're inside a course, you can view the grades for that course only.
On the course menu, select the My Grades link, or select the Tools link, and then select My Grades.
You can view your total grade to date for the course, along with graded items, items you've submitted for grade, and upcoming items you need to submit.
And finally, for a graded item, select the comments link to read your instructors feedback.