Which is a better option to do robotics in further career USA or Germany

Hi USA clearly is a winner when comes to engineering/technology for any degree but only if you can afford the education there. Germany has speciality in mechatronics and if you wish to do that, complete your degree from germany (almost free) and go for job in USA. Hope this helps

You should keep your options open and apply to universities in both the countries. Take IELTS/SAT and learn german language too. Target Fall 2017 intake. Based on your scores, you can decide which university fits best in your criteria.