Can we earn money through a research publication?
can we earn money through a research publication?


Certainly Yes.  

Good publications make you a stronger candidate when apply to grants. It also help you in securing a job; if you do not have one. Also, collaborating with industry could be another way for earning money. Selling publication is something I never heard in my field (computer science). I do not even think it is possible in other fields.  

If you are looking only for money then doing research is one of the bad choices you have.