To create a result, make sure you are on the main Editor tab and:
Click on the result title bar to expand it.
Set the score range for which this result would be the shown to the quiz player. Each correct answer increases the score with 1 and each wrong answer is equal to 0. If using “Weighted score”, each choice would increase the final score with the numeric weight you’ve assigned it.
Fill in the result title.
Fill in the result description.
Optionally, add an image by using the Image button.
Create more results to cover all the possible scores a quiz user might end up with.
Done with those? Then make sure to Publish/Update the quiz from the button at the top right corner of the screen: