The official scores have not been released yet. They will be released on March 17th.

There is another way to check your answers.

The question paper and answer key for SET 3 have been released on the official website for GATE. You can find them here.

http://gate.iitg.ac.in/?page_id=748

Also the responses you have submitted in the exam are available to you on GOAPS portal

http://appsgate.iitg.ac.in . You can login and download your responses. Good luck.