M.S

Hi Akhil,
Please take help of an overseas consultant who will review your profile and suggest you colleges accordingly. You must share where you want to study, what your career plans are, your budget, etc., and a whole lot of information for this purpose. Scholarships are awarded on the basis of merit, if you have a strong profile you can stand a chance for obtaining scholarships. Canada, Australia, Singapore, Hong Kong, Germany, etc., are some of the best countries for civil engineers, you can find the colleges here.

Hi,
Please see these, you will find deadlines according to the program you are planning to pursue and everything is available on the websites.
https://www.grad.ubc.ca/prospective-students/application-admission/application-deadlines
http://explore.usask.ca/admissions/requirements.php
https://www.uregina.ca/gradstudies/future-students/deadlines.html

Yes, you can easily get a part-time job in Canada.

Maximum top international universities for civil engineering are in USA. MIT USA is the top most Institute for MS in civil engineering in world. Cambridge University UK is the second best option for doing MS in civil engineering. NUS, Singapore is the third best option for doing MS in Civil Engineering. IIT Roorkee is the Mecca of civil engineering in India.

It will be difficult for you to get into Nirma University with this score.

It totally depends on you. What is your choice? What suits you better? Where do you feel more comfortable to work for life-time? Because no one knows you better than you.