So to save your time, for the sake of editing, I recommend just playing through the game to read through each scene. If you spot a spelling/grammar mistake, you can just ctrl+f the script to search for the erroneous word/phrase in the dialogue. :) This gives you a more accurate viewpoint for editing - some messages look weird in game, like they could have been indented better, or the actual dialogue doesn't seem to match the scene because I might have missed a line break.
If for some reason you can't make actual edits to the script (e.g. can't find the specific problem text), you can make a list of the errors or take pictures and send them to me via PM; I'll edit them in from my end. :)