Need advice

I'm a 23 General, non engineer female, have scored about 80s in both my board exams and 8.77 CGPA in college pursuing bcom hons. Registered for CAT and other management tests, but can say there's no scope as I did a blunder so my focus is only GMAT for now, I'm not very strong financially, but if my put my heart into it can manage to get a good score although, I don't know what colleges to apply which countries and cities to target, what course to apply for, what the return on investments would be based on the country's economy and how much to expect or what to expect if I do manage to score decently. If someone can guide me through this, as I don't really want to put more money in just consultation and research for colleges. Thank you