Hello :)
I would have to give this map a -1. While this tower is a replica of the towers from the Battletowers mod, the tower is very plain, using only stone brick. While this is accurate to what the Battle Towers in the mod look like, it's a bit boring. Also, there are many many tower themed maps already in game. I would check the Parkour List document next time to make sure you have an original theme before you start building:
https://manacube.com/threads/parkour-list-with-theme.20194/
As far as the parkour, it's far too easy to be an expert map. This is mostly because the parkour is also isn't varied, using only ladders and normal blocks. Try to mix in some other kinds of blocks like fences, walls, panes, heads, anvils, etc. so that your parkour is more unique and fun to play!
Please note I am only a Mapper and community member and not a map judge, I just like to give feedback on people's map submissions as to help improve people's skills in the community :) good luck with your submission!