It’s possible that this already exists, but I can’t find it.
I don’t need to see the leaderboard on the quiz results page. It’s distracting me from the things I want to see and it’s redundant, because I can see the leaderboard on my dashboard.
At the moment, it's not available - it's basically a 2-for-1 where if you have it on the dashboard, it'll also appear there. Will consider adding a setting later!