Your goals, interests, professional aspirations, and other restraints will determine whether you take the GRE and study abroad or attend NICMAR.
Take the GRE and apply to foreign universities if you wish to study abroad and work overseas. A master's degree in civil engineering from a top foreign university will improve your skills. It will improve global career prospects as well.
On the other hand, NICMAR degrees are ideal if you want to specialize in construction management and related industries. The well-known Indian institute NICMAR offers courses in construction management, real estate management, infrastructure management, and project management.
Now, you should consider factors such as your career goals, financial situation, and personal preferences before making a decision and seeing if it suits you.