At the end of a CLEP® exam, you will be asked if you are sure you want to report your score and if not, you have the option of canceling.
If you cancel, you are canceling the entire test, not just the reporting of your scores. You will not receive feedback on how you did and you will have to wait six months to take the test again.
There is no reason to select "cancel." Poor scores do not affect admissions or your GPA. CLEP tests are difficult, but remember, these tests are scaled. You can miss many questions -- perhaps half of them -- and still pass!