Hello fribe,
I will be giving your map a -1
The theme is unoriginal, as Katrina mentioned, there are a few maps with a very similar theme. The build is quite plain, I would suggest adding more detail to it just to overall make it look a bit more appealing.
The parkour is alright, I would recommend using more variety in your jumps, but it wasn't too bad. I would also suggest adding coloured carpets or something like that throughout the map to show where to go, I know you already placed some signs to show some direction, but I still personally found it quite confusing.
I would also say the parkour is too easy and too short to be an expert map, I would recommend you either leave the parkour how it is, or nerf it a little bit and change it to a hard map, rather than keeping it as an expert.
Good luck! :)