Congratulations on the launch of the project! Using the previous score as the starting time buffer for subsequent runs is a practical mechanic that creates a nice 'just one more try' loop. The neon glowing platforms make spatial readability clear during jumps.
For future polish, the grey background makes the environment feel a bit like a test room. Adding some distant futuristic geometry, skybox elements, or particle fog would give more depth and atmosphere to the theme. The verticality of the stage is also something to keep in mind: since it's a runner/race, it leans more towards horizontal progression rather than vertical.