NO student visa for any degree, diploma, certificate or program at or below any degree, etc, you already hold. If you hold a bachelor's degree, you cannot go abroad for another bachelor's degree. You would have to apply for graduate school, IF you fully qualify to apply for admission.
Scholarships are typically for undergraduate degree programs, and usually are not available for graduate school. Furthermore, financial aid for foreign students is scarce to non-existent, and competition for any financial aid which might be available is very, very tough. You must prove you have sufficient funds for all school + living expenses + return transportation to your country of citizenship to apply for a student visa. If you do not have the money, you need to rethink going abroad for school. You can only work without restrictions in your own country, so if you have to work your way through grad school, do that in your country.