It's not too bad, mechanically. The movement is very fluent and there are seemingly no technical issues. At the very start, I was wondering if I should be avoiding or collecting the falling objects, but that became clear soon enough.
It's just that it gets boring fast. I get the first five and expect a change of gameplay that never comes, and around the tenth point I have already lost interest in the game but kept going up to 35 just to confirm that yes, there is nothing more to this than what I've already seen.
You've got a solid base here, but to keep players engaged, you should gradually increase the stakes and difficulty. Shorten the intervals between spawning the falling items, or make them faster (but not so much that it becomes impossible). Spawn multiple at the same time at different speeds, or in manageable patterns close together. Spawn harmful items you have to avoid. Or temporary obstacles (why else have the jump, anyway, if everything is on flat ground?).
There's also no pause (or grace period before you first move), so I keep dying over and over while writing this review. This could be a good place to show the score from the previous attempt (perhaps the all-time high score).
About the score, consider if you want to allow it to fall below zero (which looks slightly weird), or if you even want to subtract points when you lose a life in the first place – because that means your “final score” will always be 5 points lower than what you were looking at just before you died. Your score (and potentially high score) isn't shown when you lose, either.
Overall it's fine and has potential, but currently, you have no reason to play this for longer than thirty seconds.