1) Go to http://www.topik.or.kr.
2) Click on "성적 확인' icon which is in the right bottom of the page.
3) On the next screen, click on the red circled part (해외 접수자 성적 확인) if you are a foreigner. And if you are a Korean I don't think I need to tell you. ;)
4) On the next screen fill up your registration number and date of birth in the concerned boxes and click on "성적 확인".
5) Hold your heart and take a deep breath. Your marks will be on the screen in a few seconds..... All the Best :) :)