Best Game Ever. Keep Up The Awesome Work.

The game is good but can you make the camera to zoom out/move above when the cube launches in the air so the player can see where he is landing

I see you watched allot of brackeys. This is the same game from brackeys tutorial but with other assets around the map. If this is your first unity game then its pretty good, but if not i think you should try making more original games...

Ahh, nothing like the start of summer to play a winter-themed game. :)

I think I've seen someone use the same template/tutorial for this game before, since the core gameplay was pretty much the same. I'll repeat what I wrote back then:
– There's no point in having a score if it gets reset in between levels. That way, a player who didn't die once during his entire playthrough AND a player who kept dying constantly during all levels will end the game with the same exact score => score for the last level. Pass the score between levels.
– I like that crashing doesn't send you back to the start immediately, but there's a slight delay. That's important because you have time to acknowledge the cause of your crash.
– It doesn't have to be a long, wide, straight road. How about a branching, winding path? A high-risk narrow detour which results in a score bonus? You could even set up a scoreboard, so players can compete with each other.
https://bitbucket.org/newgrounds/newgrounds.io-for-unity-c/

But I think your version has nicer graphics. Although some background objects don't have colliders, so things can pass through (e.g. the gate and the trees at the very start). I also loved the last level with the jump, I think it was a great way to end the game, but I don't see the point of the floating fence.

The game crashed with an exception a couple of times when I fell from the edge.
https://ctrlv.cz/shots/2019/06/07/yRtD.png
"Failed to execute 'setValueAtTime' on 'AudioParam': The provided float value is non-finite."
See here if it's similar to your problem:
https://github.com/Tonejs/Tone.js/issues/347

The options menu is complete garbage, though. :)
https://ctrlv.cz/shots/2019/06/07/xX4t.png
It's unusable because the layout isn't anchored properly and there's no "Back" button (!!), so you have to reload the game in order to get back to the menu, which resets the options.
https://ctrlv.cz/shots/2019/06/07/wbue.png
Even when you go fullscreen, it doesn't get better; the options are randomly scattered around (instead of being in the same column), there's no padding, the fullscreen button doesn't do anything… and of course, it's still all pointless, because you can't leave the options settings.