Mathematics has countless applications in every possible aspect of life. Without mathematics our civilisation would be little more advanced than the ancient Egyptians: we wouldn’t have governments funded by a tax system, no phones, no television, no computers, no internet and no satellite navigation. The cultural value and the monetary economic value of mathematics are too large to measure.
Mathematics is also the language of the universe, from the electrochemical signals in our brain to the equations of General Relativity which govern the motion of stars and galaxies everywhere in the universe. It is one of humanity’s most noble endeavours to understand the universe we live in, and that would not be possible without mathematics.
Some mathematics is relevant only in the area that inspired it, and is applied to solve further problems in that area. But often mathematics inspired by one area proves useful in many areas, and joins the general stock of mathematical concepts. A distinction is often made between pure mathematics and applied mathematics. However pure mathematics topics often turn out to have applications, e.g. number theory in cryptography. This remarkable fact, that even the "purest" mathematics often turns out to have practical applications, is what Eugene Wigner has called "the unreasonable effectiveness of mathematics"
The Scope and opportunities in Maths are Mathematician - you can go into the teaching sector also. Check out institutes like TIFR Mumbai, IMSc Chennai, Harish Chandra Research Institute Allahabad, Actuarial Sciences - If you love data and maths , actuarial sciences would be a great field for it , Data Analysis/Operations Analysis/Project Development - If you want to work in the private sector, you can look at these profiles , Military Operations - Mathematics degree would also allow you to work in the military sector, scientists are always required to work with military and development (DRDO, ISRO, NAL, SETS, etc.). You can also join the navy as a Commissioned Officer in their education or logistics branch , Banking, government exams are another sector that you can get into with mathematics ,There are a lot of companies where you can work with as a Market researcher to identify market patterns and trends , and help in analysing these trends ,Market Researcher - There are a lot of companies that you can work with to identify market patterns and trends, and help in analyzing these trends , You can also get scholarships and good research opportunities in some best institutes or programs like NBHM, MTTS , JRF , ISI etc.