Sales & Marketing in USA

Marketing is a popular course that a lot of students study. I personally know 4 friends who have done so. Two of them went through Edwise and were happy with the service. You can check them out.

Yes, you can as you have completed your Bachelor's degree. In order to Pursue MBA in USA, you must clear GMAT exam. TOEFL is widely taken English test accepted by most of the Universities all over America but now days some universities are also accepting IELTS and SAT scores to grant admission to overseas students. Once you clear the exams you can proceed with your admission & select your specialisation accordingly. Hope this answer helps you. All the best.

Check here:
https://www.usnews.com/best-graduate-schools/top-business-schools/marketing-rankings