A user's Grades area lists all courses in which they are enrolled or associated and any grade or score achieved within that course.  This area can be accessed by via by selecting Grades in the User menu in the upper right corner of the screen.  

Accessing grades from the user menu.

As a learner, all enrolled courses will be displayed under Courses I am taking with the Grade achieved (to date) listed to the right. The course name is a link to the user's gradebook within the corresponding course and will show all gradeable items and current score.  

A Site administrator or Trainer will additionally see a list of course in which they hold Editing Trainer, Trainer or another role other than Learner under Courses I am teaching.  

The course name is a link to the corresponding course Grader report.