SL: JavaScript to send Numerical score to LMS (Scorm 1.2)

(One post indicates this is not possible (send point score to a SCORM 1.2 LMS, and that we should use a Short Survey question as a workaround and move the variable over that way;) however, ShortSurveys seem to use Text-based variables, and I need to use a numerical field to move the variable to the LMS.)

That's correct. But you could use a "Pick Many" Survey Question, which can store a numerical value and send it to the LMS. To repurpose it, set its variable equal to the "Quiz1.ScorePercent" built-in variable when the timeline starts on the Result slide.

On the Result slide, reference the survey question's variable instead of directly using the "Quiz1.ScorePercent" variable. Publish it as "Passed/Incomplete" when the learner completes a quiz.