Student work in Perusall is graded automatically; to see the grades assigned, click the Gradebook option on the left navigation panel for your course.
Perusall also provides you with an automatically-generated Confusion Report that summarizes general areas of questions/confusion. Click the Confusion report button underneath an assignment in the dashboard. (The Confusion Report may not be available for assignments where there are only a small number of high-quality questions for Perusall to analyze.)
You can also review student work in more granular detail, in two ways:
To view comments in context: Open up the assignment and then you can see all of the highlights and conversations as students see them. If you want to read through all of the threads, one easy way to do it is to click All Conversations on the right (the two bubble icons) and then you can click one to read, then click the icon at the top to go to the next conversation or go back to the list, etc.
When looking at the document, you can also filter down to view only a single student's comments. To do this, click the filter dropdown menu (which says All Comments by default), and select Specific student.
If you would like to see the individual comment score assigned to each comment as you are reading, click the filter dropdown menu (which says All Comments by default), and select Show comment scores. You can then change a score from Perusall's automatically-generated score by clicking on the score and selecting a new score from the dropdown.
To view comments in tabular form: If you would rather review the comments in spreadsheet format, go to your course dashboard, select Assignments at the top, click on an assignment, and then click All comments. Individual comment scores will show for each comment in this view, and you can change a score from Perusall's automatically-generated score by clicking on the score and selecting a new score from the dropdown.
When looking at the comments in this table, you can filter down to a particular student by selecting that student from the dropdown menu at the top of the window.