Editing Progress Tracker Properties
To edit a module book's properties, you can either:
Select the Edit Module Book Properties item from the Tracker menu, or
Click the Properties button under the Module section of the Tracker Tool Palette.
This will display the Module Book Property Editor:

Use the first area of this dialog to set the bookIdentifier property.
The last two areas let you set the userTestScore property of the book, as well the userTestScore property of "score" pages for multiple chapter certification exams. The last section is ONLY relevant if you have multiple exams.
See Creating a Certification Exam and Indicating Module Completion for additional details.