Yes, you can ask for the broad area of concern if the recruiter is willing to provide feedback.

Keep the question focused on improvement rather than trying to reverse-engineer internal scoring or debate the decision.

A useful version is to ask which one or two skills would most improve your candidacy if you reapply, then listen for whether the feedback points to casing, communication, fit, or another area.

Do not push if the recruiter cannot share details. Capture the actionable feedback and use it to shape your next preparation cycle.

I would ask. "What should I improve before reapplying?" feels more productive than asking for a score.