Plugin Requirements:

•  XP Bar (think World of Warcraft) just above the player's belt inventory
•  For every kill (be it Scientist, Bot, Player, or Animal) the player's XP improves a percentage
•  Animal kills have the lowest percentage gain (+2%), Scientists/Bots are in the middle (+5%), with Player kills having the highest (+10%)
•  Killing sleepers lowers the percentage gain to 7%
•  Player kills cannot be teammates or authorized on the same Tool Cupboard (this will help prevent cheating the XP system)
•  Once the bar is full, that Player 'levels up' and is given +1x resource gather rate (their current Level is shown next to the XP bar)
•  Example 1:  "John_Doe" has an almost full XP bar and kills a Player, bringing him up to level 4.  He now has 4x Gather Rate.
•  Example 2:  "Sally_Ride" just leveled up to Level 7, making her Gather Rate 7x.  She has since killed 2 Bears, 1 Bot, and 3 Players.  Her XP is now at 39%.  61% more and she'll reach Level 8, giving her an 8x Gather Rate.
•  Option to wipe progression of all players when server is wiped
•  Changes may be required during development
•  Must be completed by January 31st, 2021 in order to test completely before February wipe
•  Payment upon completion

If you are serious, reply with your Discord and I will message you.

there's very similar plugins on other sites do a Google search

XNeo

there's very similar plugins on other sites do a Google search

Yeah... it was marked as Resolved about 5 hrs ago.