Which programming language has a better scope among C, C++, Python and Java?

It's not the language that will matter in the longer run, but how you approach to different problems in Computer Science and Programming. Having said that, if you still need to emphasis on one language more than the other, I suggest you pick up either Java or Python for your career. C+ and Java are

Python has a great scope among thesis languages because, in today's world, every company is trying to switch with python as python is easy to implement and provide lots of functionality to developers.