The table displays a list of each appraisal on your account. You can filter, search and sort the data to find the information you need. Try a filter on 'overdue', for example, or on a particular form name.
As an Administrator, you'll see an Edit button on each row which you can click to edit the appraisal's details. See Editing an appraisal.
If you're a Moderator, you'll see a View button on each row which you can select to view that appraisal report.