why it not works

[thin crown]

local part = script.Parent
part.Touched:Connect(function(hit)
local player = game.Players:GetPlayerFromCharacter(hit.Parent)
if player then
part.Transparency = 0
end
end)

[lusty basalt]

send it like this

also is there any erros?

[chrome tundra]

local part = script.Parent
local touched = false

part.Touched:Connect(function(hit)
if touched then return end

local character = hit.Parent
local player = game.Players:GetPlayerFromCharacter(character)

if player then
    touched = true
    part.Transparency = 0
    part.CanCollide = false
end

end)
@thin crown try this

[lusty basalt]

also for that situation you should be using if hit.Parent:FindFirstChild("Humanoid") then

[lusty basalt]

that has lots of useless stuff, we dont need to have a variable to check if its been touched already since we could just turn CanTouch off. Also having a seperate variable for character is useless.

[fast comet]

shrug

[thin crown]

capi fixed it

its okay