I was able to get at that data in my instance using this prompt:
"List all courses and count the number of students who have workflow state of active with a current score below 60"
I don't have a sub-account like you do so you will have to add that to the prompt. Below is the SQL it generated as well.
SELECT
_c.id AS CourseId,
_c.name AS CourseName,
COUNT(DISTINCT _e.user_id) AS NumStudentsBelow60
FROM
`courses` _c
JOIN `enrollments` _e ON _c.id = _e.course_id
JOIN `scores` _s ON _e.id = _s.enrollment_id
WHERE
_e.type = 'StudentEnrollment'
AND _e.workflow_state = 'active'
AND _s.course_score = TRUE
AND _s.current_score < 60
AND _c.workflow_state NOT IN ('deleted', '__dap_unspecified__')
AND _e.workflow_state NOT IN ('deleted', '__dap_unspecified__')
AND _s.workflow_state NOT IN ('deleted', '__dap_unspecified__')
GROUP BY
_c.id,
_c.name