Software Engineering

Hi Augustya,
All universities in USA offer financial aid, and its on merit. You will be automatically considered for scholarship at the time of admission. Since these are on merit you must have a good profile, good grades and apply early. Check university websites, see the deadlines and follow the timelines. It takes a year to prepare for the application process. So prepare early. Some of the best includes
MIT
Georgia Tech
University of Pennsylvania
UCLA
UC Berkeley
University of Princeton
New York University etc.

Hi, focus on your academics and do well. Build your overall profile these two years, take part in extracurricular activities in addition to classroom activities. In short, you must be an all-rounder. If it is too difficult, do extremely well in your studies. If you are interested in Software Engineering, you may build software projects in school and similar activities. As part of the application process, prepare for SAT or ACT. SAT subject tests for top ranking universities. You must also take the TOEFL, however it can be waive.

Hello Augustya,
No. JEE scores are used only for admission into selected colleges in India. It is not used for admission into the colleges abroad.
You need to clear the respective exams and satisfy the eligibility requirements as required by the college.

Yes. You should clear all the requirements which you would find on the website!
Except that admission is based on VITEEE only!

Currently, there is no software engineering course which can be pursued from IACT. However, there are many other courses if you are interested. Please refer to the link provided below for a list of courses which are on offer at this institute.
https://www.shiksha.com/college/international-academy-for-certification-and-training-iact-noida-37662

Software development is a better choice for sure as web development is restricted to online space but software development can be used for online, to run hardware, for mobile phones etc. As the area of application for software development is more, opportunities are also more.