Formfacade does not support all the google forms quiz features. If you enable quiz feature in Google Forms, select the correct answers and assign points in Google Forms, and then customize it using the Formfacade Assign points addon, the setup will automatically imported to Formfacade. If you would like to show the summary of correct and incorrect answers along with the total points, you can use the ${viewscore()} formula in the custom message setup.