Please guys let me know.

Common sense programming language...
Lolz...if you are delving into a language for the money chances are you won't make the money and you will end up producing very bad code, however to answer your question, I'd solicit JavaScript ... JavaScript is no longer what it use to be...after learning JavaScript to an intermediate level....look for reactjs tutorials and NodeJS....one powerful stuff about JavaScript at the moment is the emergence of the Reactjs Native ....it means you can create android and iOS apps that will render greatly like they were programmed with their respective native languages...Cordova n phonegaps are not native .... They can build apk apps but they don't have that native feel...JavaScript is the future...Once more never venture into a language for the money, if you are a business man, you had better hire or take your learning serious...