suppose my site index has a PR of 2 how can i pass the PR to child page domain dot tld/link1 using .htaccess plese help me.
Just link to the child page(s) from the home page using a standard HTML link! I am not too sure what you are trying to do with the .htaccess file, sorry. The .htaccess file is usually used to redirect pages, not to pass PR. PR is automatically passed when you like to a page, once Google picks it up, counts that links etc. I don't think it has anything to do with the .htaccess file
i have archive page and there are links to all of my content from this archive page. my site page rank will be shared for all of my content
Unless you are trying to re-direct PR from the parent...there is no reason to be using the .htaccess. A simple href from one page to another will get the job done.