Hey there!

SAT mainly covers English and Mathematics. Giving around 1-2 hours everyday for it's preparation is enough to fetch you good marks. Since you are an Indian and been through Indian education system, you might find the Mathematics section easy, however, you might find the English section difficult. Preparing for it with the right resources shall ensure that you score well in that section as well. For more information regarding SAT preparation, you are advised to visit the following links:

https://studyabroad.careers360.com/articles/sat-preparation-tips

https://studyabroad.careers360.com/articles/sat-sample-papers

https://collegereadiness.collegeboard.org/sat

Hope this helps. All the best!