Hello Ashfaq Php Web Developer,
Zymic does not keep records of in-the-clear
passwords - all passwords are encrypted/hashed.
If you have not recorded your Username and Password the best thing I could recommend is create a new Web Hosted Account via the Control Panel and restore your Web from a backup (you did make a backup - didn't you, because Zymic Webmaster Resources does not do that either) on your local computer.
You may wish to drop into the Hosting Support
chatroom and inquire there about this issue though (stranger things have happened ... but then again maybe not). If you go to the Hosting Support, Once there immediately ask your question by entering it into the Text Entry Field
near the bottom (or provide them with the issue) and be patient for a response as the Zymic Staff is always working behind the scenes keeping Zymic a great Community.
Hope this helps you out.