It really depends what you want to do...if you want to be a full stack developer, there are several languages you'll want to learn. If you want to be an app developer, there are specific languages you'd focus on. Same goes for data science, software engineering, etc. You can also look at it from front-end vs. back-end perspective. Point being, there are loads of languages and lots of opportunities for you to explore!
To narrow it down, you might want to look at job descriptions for positions that interest you and see what they are asking for proficiency in. You could also talk to recruiters and people currently in roles you admire to ask their advice on what languages are most helpful now (and may be most helpful moving forward).