B.Sc

Please use the link provided below for a list of colleges which offer courses in B.Sc nursing (correspondence) in Mumbai. You can use the filters on the webpage to navigate to a college of your choice.
https://www.shiksha.com/science/colleges/distance-correspondence-b-sc-colleges-mumbai-all

Some of the best colleges in India for this course are:-
1. Acharya N.G Ranga Agricultural University
2. Andhra University
3. LPU
4. Manav Rachna International University.

Please refer to the link provided below for an exhaustive list of colleges which offer M.Sc. courses via distance mode in India. You should be able to navigate to a college of your choice using the filters on the web page.
https://www.shiksha.com/science/colleges/distance-correspondence-m-sc-colleges-india

If you are looking to do further study, you can consider the following courses in India:
1. M.Sc Medical technology
2. M.Sc Cardiac perfusion technology
3. M.Sc Biomedical technology/ M.Sc Biomedical Engineering
4. M.Sc Biotechnology
5. M.Sc Medical Biotechnology
6. M.Sc Medical Physiology
7. M.Sc Biochemistry
8. M.Sc Bioorganic chemistry
9. M.Sc Molecular biology
10. M.Sc Health care sciences

Please refer the link provided below for a list of colleges which offer courses in M.Sc biotechnology. You should be able to download their brochure which contains important placement information. Also, add several colleges to your compare list and compare features which you are interested in.
https://www.shiksha.com/science/colleges/m-sc-biotechnology-colleges-india

If you are interested in electronics then try GATE, if management then CAT, XAT and other management exams are there for MBA or you may try other jobs after Bachelor's degree like CDS, Indian army, railway, banking or teaching after B.Ed or you can pursue MS from abroad and then PhD.

You can do B.Tech and then prepare for UPSC.