I remember seeing something on wiki where you could find the text length of a string, I don't remember it clearly, so here is an example of what I have
script.Parent.Text = "g"
wait(1)
script.Parent.Text = "ge"
wait(1)
script.Parent.Text = "get"
----ETC.-------

1 comment
I would like to add that you can also use the len() method to get the LENgth of a string.