Admission to top-ranked universities in USA for MS can be competitive. You usually need a good bachelor's degree. Most schools want a GPA of about 3.0 or above (some ask for 3.5 or higher). Many programs also need test scores like the GRE (for science or tech) or GMAT (for business).
If English is not your first language, you must take the TOEFL or IELTS. A TOEFL score of around 80–100 or an IELTS 6.5–7.0 is often needed. For example, the University of California, Berkeley often asks for IELTS 7.0. You will also need official transcripts, letters of recommendation, and a statement of purpose (an essay about your goals).
Some programs may ask for work experience or research. Send your application before deadlines, which are often in late fall or early winter. For example, some schools may ask for a resume or a research plan. A clear study plan and strong letters of recommendation can improve your chances.