It should be part of your Talend license email. You will have a link in it. Do you have the email and link? You need the email because it contains a username password. The link is password protected.
Thanks for the Reply, I am having Talend Data Integration 6.3.1 --30 day trail Evaluation License , is the CI builder available in that?
There is no Talend-CI-Builder-V6.x.x zip archive file in a 30 day free trail Evaluation solution(studio only).