I’m not entirely sure of all the details of your scenario, but here are a few comments.
If a test is graded it will set the AICC_Score and if passed it will set the AICC_Lesson status to completed if the mastery score is set in the AU.
If you just want to set the score and completion status you don’t need a test, you can add a checkbox control and attach actions to set the score and completion status if the checkbox variable contains “on”.
If for some reason you want the checkbox response recorded you would need to make sure the test is set to “grade the test” and select the SCORM publish option “The published course will report Test/Survey Question Interactions to the LMS”
Hope this helps.