many schools are test optional tho..you can take English proficiency test like duolingo.

ICS, AAU, Stanford, and Bingham are the current test centers ... I recommend you to practice mainly using Khan Academy ... All the College Board's practice tests are on there, and you can take them online ... There are also other many practice tests ... You should first take a diagnostic test ...then it will give you a personalized practice program ... Prep-books are a waste of time ... Kahn Academy is enough if you use it well ... Apart from it, you can do real exams on your own, which you can on different telegram channels ...good luck

Register on sat.org then you can read books and do practice exams. Watch YouTube videos and read blogs. Those would be more helpful than what I can tell you in a short answer.