find the user.ini its in the system folder of the game I will elaborate if neccesarry.
Open then and do Edit /Search look for [Engine.PlayerController]
under that will be bNoMatureLanguage=False
Change that too bNoMatureLanguage=True
Hope this helps show your parents if this is why they wont let you play i had to do it my mom cusses every 5 seconds but ownt let the game do it go figure.