How to fix this fading text module?

local module = {}
 function module.TextFade(plr)
	local CurrentTransparancy = 0
	local PlrUI = game.Players.LocalPlayer.PlayerGui.PlrUI
	for i = 1,100,.1
	do
		CurrentTransparancy = CurrentTransparancy + 1 
		PlrUI.Title.Transparancy = CurrentTransparancy
	end
end
return module

Howdy!

You're rapidly increasing the transparency. Remember that a transparency of one is completely gone. Also, you've got a weird way of adding the transparency. Try what I have below.

local module = {}
function module.TextFade(plr)
	local CurrentTransparancy = 0
	local PlrUI = game.Players.LocalPlayer.PlayerGui.PlrUI
	while true do
        	PlrUI.Title.Transparancy = PlrUI.Title.Transparancy + 0.1
		repeat until PlrUT.Title.Transparancy = 1
	end
end
return module

If this helped you out, consider accepting this answer for those sweet, sweet reputation points. If not, comment below and I (or someone else) will help you out.

Be sure to check out the Roblox API Documentation as well for additional reference.

Finding The Errors

local module = {}
 function module.TextFade(plr)
    local CurrentTransparancy = 0
    local PlrUI = game.Players.LocalPlayer.PlayerGui.PlrUI --// Error #1
    for i = 1,100,.1 --// Error #2
    do
        CurrentTransparancy = CurrentTransparancy + 1 --// Error #3
        PlrUI.Title.Transparancy = CurrentTransparancy --// Error #3
    end
end
return module

Error #1 - You already have plr passed through as an argument, and you cannot access LocalPlayer through a ModuleScript.

Error #2 - You are already making it invisible as it's starting at Transparency 1, and going to 100, by 0.1. You have to start it at 0 to make it visible, and the transparency only goes to 1, anything after that is the same as having it at 1.

Error #3 - You are increasing the transparency by 1, instead of using the variable i

Fixed Script

local fadeModule = {}

function module.FadeText(player)
	local playerGui = player:WaitForChild("PlayerGui")
	local UI = playerGui:WaitForChild("PlrUI")
	local title = UI:WaitForChild("Title")

	for i = 0,1,0.1 do
		title.Transparency = i
		game:GetService("RunService").Stepped:Wait() --// This will make it run smoother, better than using wait()
	end
end

return fadeModule

Hope this helped! Feel free to select this as an answer if this worked for you!