pretty simple but fun game, cool :)

I think the gap between the final points tier and the rest is so extreme that you have no reason to ever “play it safe and slow”.
Also, I wouldn't make the box fall immediately after the start, but rather after your first click (so that new players don't instantly lose until they figure out what's going on). And maybe consider awarding the points on “bounce”, not on touch – because currently, you will always get the minimum of 5006 points, even if you do absolutely nothing.

This kind of game makes you bored really fast unless there's some competitive element. I would at least keep track of the player's best score, so you at least compete with yourself – or much better, connect it to Newgrounds scoreboard so that people may compare scores with everyone else.
https://www.newgrounds.io/