JumpPower is not changing upon joining?

I tried putting this in a LocalScript in backpack, screengui, starterplayer/character scripts folder, then in a regular script in serverscriptservice, nothing works.

When in LocalScript, I define player as LocalPlayer, in regular script, I define player in the PlayerAdded function.

It is printing the correct numberValue, there's no errors. But it won't update the JumpPower, it remains at 50.

Here's the code:

game.Players.PlayerAdded:Connect(function(player)

local Saves = player:WaitForChild("Saves")
local char = player.Character
local human = char:WaitForChild("Humanoid")
local JumpPower = human.JumpPower

local bools = {}
bools.jump1 = Saves:WaitForChild("jump1")
bools.jump2 = Saves:WaitForChild("jump2")
bools.jump3 = Saves:WaitForChild("jump3")
bools.jump4 = Saves:WaitForChild("jump4")
bools.jump5 = Saves:WaitForChild("jump5")
bools.jump6 = Saves:WaitForChild("jump6")
bools.jump7 = Saves:WaitForChild("jump7")
bools.jump8 = Saves:WaitForChild("jump8")
bools.jump9 = Saves:WaitForChild("jump9")
bools.jump10 = Saves:WaitForChild("jump10")

local buttons = {}
buttons.jump1 = player.PlayerGui.main.shopFrame.skillsScrolling.jump1
buttons.jump2 = player.PlayerGui.main.shopFrame.skillsScrolling.jump2
buttons.jump3 = player.PlayerGui.main.shopFrame.skillsScrolling.jump3
buttons.jump4 = player.PlayerGui.main.shopFrame.skillsScrolling.jump4
buttons.jump5 = player.PlayerGui.main.shopFrame.skillsScrolling.jump5
buttons.jump6 = player.PlayerGui.main.shopFrame.skillsScrolling.jump6
buttons.jump7 = player.PlayerGui.main.shopFrame.skillsScrolling.jump7
buttons.jump8 = player.PlayerGui.main.shopFrame.skillsScrolling.jump8
buttons.jump9 = player.PlayerGui.main.shopFrame.skillsScrolling.jump9
buttons.jump10 = player.PlayerGui.main.shopFrame.skillsScrolling.jump10

if bools.jump1.Value == true then
    buttons.jump1.Text = "+1%Jump"
    buttons.jump1.BackgroundColor3 = Color3.new(85,170,255)
    script.jump1.Value = 0.5
end

if bools.jump2.Value == true then
    buttons.jump2.Text = "+2%Jump"
    buttons.jump2.BackgroundColor3 = Color3.new(85,170,255)
    script.jump2.Value = 1
end

if bools.jump3.Value == true then
    buttons.jump3.Text = "+3%Jump"
    buttons.jump3.BackgroundColor3 = Color3.new(85,170,255)
    script.jump3.Value = 1.5
end

if bools.jump4.Value == true then
    buttons.jump4.Text = "+4%Jump"
    buttons.jump4.BackgroundColor3 = Color3.new(85,170,255)
    script.jump4.Value = 2
end

if bools.jump5.Value == true then
    buttons.jump5.Text = "+5%Jump"
    buttons.jump5.BackgroundColor3 = Color3.new(85,170,255)
    script.jump5.Value = 2.5
end

if bools.jump6.Value == true then
    buttons.jump6.Text = "+6%Jump"
    buttons.jump6.BackgroundColor3 = Color3.new(85,170,255)
    script.jump6.Value = 3
end

if bools.jump7.Value == true then
    buttons.jump7.Text = "+7%Jump"
    buttons.jump7.BackgroundColor3 = Color3.new(85,170,255)
    script.jump7.Value = 3.5
end

if bools.jump8.Value == true then
    buttons.jump8.Text = "+8%Jump"
    buttons.jump8.BackgroundColor3 = Color3.new(85,170,255)
    script.jump8.Value = 4
end

if bools.jump9.Value == true then
    buttons.jump9.Text = "+9%Jump"
    buttons.jump9.BackgroundColor3 = Color3.new(85,170,255)
    script.jump9.Value = 4.5
end

if bools.jump10.Value == true then
    buttons.jump10.Text = "+10%Jump"
    buttons.jump10.BackgroundColor3 = Color3.new(85,170,255)
    script.jump10.Value = 5
end

JumpPower = 50 + script.jump1.Value + script.jump2.Value + script.jump3.Value + script.jump4.Value + script.jump5.Value + script.jump6.Value + script.jump7.Value + script.jump8.Value + script.jump9.Value + script.jump10.Value
print(JumpPower)

end)