How to make a text appear letter for letter?

Hello,

how do i make a text appear letter for letter, i saw much games using it but i want to know how, i'm a pretty good scripter but i can't do this

I'm pretty sure you have to do this manually every time you want different text so here's a basic function

Basically how my script works is there's a value put in the player when they join and the script checks if that bool value is set to true and if it is, then it runs the function

local text = script.Parent
local player = game.Players.LocalPlayer

function() Text1
	text.Text = "h"
	wait(0.2)
	text.Text = "he"
	wait(0.2)
	text.Text = "hel"
	wait(0.2)
	text.Text = "hell"
	wait(0.2)
	text.Text = "hello"
	wait(0.2)
	text.Text = "hello w"
	wait(0.2)
	text.Text = "hello wo"
	wait(0.2)
	text.Text = "hello wor"
	wait(0.2)
	text.Text = "hello worl"
	wait(0.2)
	text.Text = "hello world"
	wait(0.2)
end

while wait(1) do 
if player:FindFirstChild("Load").Value = true then
Text1()
player:FindFirstChild("Load").Value = false
	end
end

You can simply use a loop with the string you want it to spell out in the end. I posted a small example below for you to integrate into your own script. Note: posting anything you've tried is a hell of a lot better than simply saying you can script.

local str = "hello world!"
local text = script.Parent -- Assuming that the text displayer is the script's parent

for i=1,string.len(str) do
wait()
text.Text = string.sub(str,1,i)
end

If you need any more help, feel free to ask!