Exp game mechanic not working?

You mixed up your greater than and less than signs

All I did was switch every single > to < and every single < to >. Remember, This > means greater than and < means less than. Think of it like stating a fact. 5 is greater than 3, so 5 > 3. This might not help. But find a way to remember.

I also used variables to make the code more simple. When referencing something for more than once or twice, use a variable.

Here's the code.

local player = game.Players.LocalPlayer
local RankVal = player.leaderstats.RankVal

local ranks = {
    [1] = "Newbie"; -- 0
    [2] = "Member"; -- 100
    [3] = "Forager"; -- 300
    [4] = "Watcher"; -- 600
    [5] = "Mason"; -- 1200
    [6] = "Warrior"; -- 2400
    [7] = "Runner"; -- 4800
    [8] = "Elder"; -- 9600
};



repeat wait() until player.Character

player.leaderstats.RankVal.Changed:connect(function()
    local Exp = player.leaderstats.Exp
    print("Works")
    if Exp.Value >= 100 and Exp.Value < 300 then RankVal.Value = 2
    elseif Exp.Value >= 300 and Exp.Value < 600 then RankVal.Value = 3
    elseif Exp.Value >= 600 and Exp.Value < 1200 then RankVal.Value = 4
    elseif Exp.Value >= 1200 and Exp.Value < 2400 then RankVal.Value = 5
    elseif Exp.Value >= 2400 and Exp.Value < 4800 then RankVal.Value = 6
    elseif Exp.Value >= 4800 and Value < 9600 then RankVal.Value = 7
    elseif Exp.Value >= 9600 then RankVal.Value = 8
    end
end)

Hope that helped! Good Luck!

local player = game.Players.LocalPlayer

local ranks = {
    one = "Newbie"; -- 0
    two = "Member"; -- 100
    three = "Forager"; -- 300
    four = "Watcher"; -- 600
    five = "Mason"; -- 1200
    six = "Warrior"; -- 2400
    seven = "Runner"; -- 4800
    eight = "Elder"; -- 9600
};



repeat wait() until player.Character

player.leaderstats.RankVal.Changed:connect(function()
    print("Works")
    if player.leaderstats.Exp.Value <= 100 and player.leaderstats.Exp.Value > 300 then player.leaderstats.RankVal.Value = ranks.two
    elseif player.leaderstats.Exp.Value <= 300 and player.leaderstats.Exp.Value > 600 then player.leaderstats.RankVal.Value = ranks.three
    elseif player.leaderstats.Exp.Value <= 600 and player.leaderstats.Exp.Value > 1200 then player.leaderstats.RankVal.Value = ranks.four
    elseif player.leaderstats.Exp.Value <= 1200 and player.leaderstats.Exp.Value > 2400 then player.leaderstats.RankVal.Value = ranks.five
    elseif player.leaderstats.Exp.Value <= 2400 and player.leaderstats.Exp.Value > 4800 then player.leaderstats.RankVal.Value = ranks.six
    elseif player.leaderstats.Exp.Value <= 4800 and player.leaderstats.Exp.Value > 9600 then player.leaderstats.RankVal.Value = ranks.seven
    elseif player.leaderstats.Exp.Value <= 9600 then player.leaderstats.RankVal.Value = ranks.eight
    end
end)