Google Page Rank is Google’s way of measuring how important a website is on a scale of 1-10. Therefore if a site has a rank of 10/10, then Google will favour it a lot more than of site of 0/10 in terms of Search Engine Positioning, frequency of website being crawled e.t.c
You can find out your websites Page Rank, or any other websites page rank, by having the Google Toolbar installed on your browser.
For small websites you should expect anything between 0-3. Companies reaching over a 3 should be happy, if they're only a local small business.
If you want to improve your Google Page Rank we'd suggest a link building campaign.
