WordPress For Urdu Language

WordPress is community translated. For a good number of languages, the translation is relatively complete and follows high quality standards.

The codex page on WordPress in your language reports:

WordPress in Urdu – اردو is ongoing, but slow. Need more contributors.

So in essence: No, WP is not entirely translated to Urdu yet. You could contribute though and push things forward, if you cared.

WP uses gettext, so the translation process itself is pretty straightforward. See I18n for WordPress Developers, if you want to find out more.