USA

You can take admission, but they not only see the marks, they also see the overall performance of yours school years.

First of all, you have to go for SAT exam and based on score, you can apply for universities in USA. It completely depends on your profile and academic record along with your overall skills.

Yes, for higher education in USA SAT 1 is compulsory, but SAT 2 is compulsory for some universities and some recommend it to take.

Physiotherapy is a paramedical course like nursing, and you have to do registration in the physiotherapy council to enable you to work as a physiotherapist. One of the condition is you need IELTS 7 band in all four component. Apart from this, you might have to undergo a competency exam and to qualify to write this exam you have to work under a physiotherapist for so much hours as per your qualification and experience. Once you have done this registration you can work.

You can take the exams like GREs and SAT where they provide the scholarship for students. If you qualify the exam, you can continue your further studies abroad.
All the best.

Hello,
Check Kennesaw State University and San Francisco State University in USA. You may also check top ranked California Institute of Technology. In UK, there are more options, but if it is one year degree, it may not be recognized in India. Check Coventry University, University of Reading, Anglia Ruskin University and many more.

Yes, obviously, you have to study very hard for admission in USA and UK.

It may be a potential problem. At the same time, it may not. It is fully dependent where you are using this. In some forms, exams you will be asked to sign in full. Then, you have to write your full name. Otherwise, you can use your signature style. But remember- Don't make signature in new way every time. It may make a big issue for you. My suggestion- prepare two signatures. One, in full and other, you are already accustom to it.