Umm... You need to send me the files (translatorhappy@gmail.com)
I am gonna explain what I know, open the renpy launcher, go to the project you want to translate then press the "generate translations" button, put a name like ptbr and then "generate translations"
Go to the game's folder and there will be a "tl", send the files in there to the translator (translatorhappy@gmail.com A.K.A me) and that's all I know, I think that you have to go to screens.rpy and change a thing but I don't really remember now.
You can find a better explanation here (https://www.renpy.org/doc/html/translation.html?highlight=translation ) or you can just launch the tutorial that comes up with renpy and see there.