I'm on H1B in US,should I do any entrance exams to aply for MBA in US?

I hav emy B.Tech Degree in Information tecchnology. Now am on H1B Visa in US. Should I do any entrance exams before applying for MBA in US ?

If Yes please suggest me what are my next steps ?

In MBA am interested in doing Project management related courses or Finance. Please suggest me if any popular courses available ?

GMAT is generally the needed exam for any legit instution…just check that