Economics

You could apply for MA Economics or M.Sc Economics/statistics.
Or, you may also go for MBA.
Apart from this, you can pursue CFA.
Jobs scope could range from bank jobs to data analytics to Policy making.

Admissions are closed now for almost all the colleges and the session has already started.

For BA English (Hons): https://www.shiksha.com/humanities-social-sciences/languages/course/b-a-hons-in-english-university-of-lucknow-24319
Colleges for BA Economics (Hons):
- Central Women's College of Education
- Dr. Shakuntla Mishra Rehabilitation University
- Navyug Kanya Mahavidyalaya
- University of Lucknow

It is completely okay to do BBA after your 12th. Now, you may face a little problem when it comes to accounts in the first year because your classmates from commerce backgrounds have prior experience, but don't worry. Putting in even a little extra effort, you can easily do well in your exams. So don't worry about it. Given you have a science background, your analytical skills will be far superior compared to anyone from the commerce background, so when it comes to stats and operations, etc., you will definitely score well.

M.Sc. Quantitative Economics
Eligibility:
- B.A./B.Sc. With Mathematics (Compulsory) and any one of the three as group subjects: Economics/Statistics/Computer Science with a minimum of 50% aggregate marks in group subjects.
- Some reputed universities and institutes conduct an entrance examination for admission.

It's going to be tough. You can try somewhere else or apply next year.

There is no requirement of having maths in 12th. For admission in B.A (Hons. ) economics, you need to have minimum 40% marks.