Learn whatever language you like and helps you make games. Of the stuff I have on itch.io right now, most is made in Python or Javascript, but also Basic, And does the SugarCube story format in Twine count? Because I've seen people asking if having made a game in Ren'Py meant they're now proficient with Python. (The answer is probably no, by the way, but it's a start. You have to start easy.)