Hello student I suggest you not to focus on earning now as it might force you to choose a career in which you're not interested. So focus on learning and pursue a career in which you're interested so that you can do better in future. Aerospace engineering is a good branch in engineering if you get graduate from any top colleges you'll get placements of 7-8 lakh per annum.

To get admission in top colleges like NIT's IIITs CFTIs IITS and many others college you need to appear in jee main entrance examination.

Eligibility - candidates must passed or appearing class 12 with physics chemistry and mathematics with minimum 75 percent marks aggregate from a recognized board.

Feel free to comment if you have any doubt

Good luck