My high score is 21328.
I've gotten the impression that the pico-8 community has very different preference than me, so I won't comment on what I did or didn't like in your game. I will say this though: if you make a game with a goal of just getting as high a score as possible without the gameplay ramping up to absurdity, make the points gained as small as possible. That minimizes the chance that some jerk like me is going to come solve your game and repeatedly break the score counter. If that score seems off, it's because I hit the maximum pico-8 integer value twice.
For anyone who reads this wondering how, the safest spot is right next to the laser, moving diagonally is faster than moving straight (cause not enough code space for properly multiplying by square root of 2) and if you pay enough attention you can tell which of the spawning circles will make it in time to not be hit immediately by the laser.