Singapore

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If you have cleared JEE Mains and Advanced with a good score then you are eligible to apply for IITs and NITs.

Yes, there are such courses in Singapore, with internship opportunities at prominent hotels and they do have IELTS scorecard requirements.

Lee Kong Chian Graduate Scholarships at National University of Singapore
INSEAD-Syngenta MBA Scholarships for Developing Country Leaders
Singapore International Graduate Award.

Hi,Yes, you can pursue B.Ed from IGNOU. The eligibility criteria to apply for IGNOU B.Ed Admission is mentioned below:
At least 50% percent marks either in the Bachelor's Degree and/or in the Master's Degree in Sciences/Social Sciences/Commerce/Humanity. Bachelors in Engineering or Technology with specialization in Science and Mathematics with 55% marks or any other qualification equivalent thereto, and Trained in-service teachers in elementary education. Or, candidates who have completed a NCTE recognized teacher education programme in direct mode. Thanks.

There are several colleges but NUS Business School, National University of Singapore is the best. Also, check out Nanyang Polytechnic or management development institute of Singapore (MDIS).

Everything depends on the potentiality of yours and your ability. By the degree of BBA (IB), surely it can land you in a good corporate world. And, you can able to excel and enhance a lot. Thus, I would simply say 'yes'. You can get a job in a good company.
Everything depends on the Interview, and your knowledge skills.

Hi Abilash!
There are a lots of courses are available for you in Singapore or anywhere. You can go for PGDM course in hotel management in Singapore. There are huge opportunities in this field there. You will be easily placed with a decent package of around 8-15 LPA.
Best of luck.