Hey Ajay, the choice of your career after class 12 entirely depends on your interests and passion. Also, since you have not specified your educational qualification or the stream from which you have completed class 12, so I would answer the query in a generic way.Now, there are several learning and job opportunities in the future for students from all streams and subjects. Your choice of career depends on your interest areas or on the areas where you want to devote your whole life. Here are few career options which you can pursue but these are some general options and you may opt for something other than these too which suits you and your desires :-

Engineering by applying for JEE MAIN, VITEEE, AKTU etc

Field of Defense or Military studies by clearing NDA, CDS, AFCAT etc

Bachelor's in Science degrees or Bachelor's in Science with honours in any of your preferred subject

Law by applying for CLAT, AILET or state examinations and then pursuing career in law

Fashion and Designing

Master's and then research in any specialization which you are eligible of.

Teaching in Schools, Colleges, Online Platforms or Coaching institutes.

Management, Market, Finance, Business Administration etc

Civil services or administrative services by clearing various government examinations

Journalism

These were only a few of the career options available to you. In reality, the options after completing class 12 from any stream or course are immense and you just have to understand your interest areas in order to succeed and then make a good life decision.

Good luck.