@firetruck - You need to find a university in your own country to use as a back-up plan in case none of the international options prove to be affordable.
For better information on the whole application process for colleges/universities in the US, read through the EducationUSA website https://educationusa.state.gov/ then contact the counselors at the advising center closest to you. There are several in India: https://educationusa.state.gov/find-advising-center?field_region_target_id=&field_country_target_id=306&field_center_level_value=All If you cannot visit an advising center in person, you should be able to communicate with a counselor by phone or email.
In the US, there are a limited number of institutions that guarantee admission and significant merit-based aid to students based on their grades and test scores. Here is the list. Read through it and check each website to find out if the scholarships are also awarded to international students. http://automaticfulltuition.yolasite.com/ There are other institutions that offer competitive merit-aid. Check the websites on this list to find which offer money for international applicants: http://competitivefulltuition.yolasite.com/