If you mean how can you check what your blog's Google page rank is, then just Google "Google page rank checker" and go to the site - there, you can copy and paste the URL of any page into the space for it, click "go" or "check" or whatever it is that's there to click, and you'll get the page rank of that page displayed to you.
You don't have to have a good page rank to get a good natural search result on Google that links to your blog. Many Google page rank 1 or 2 blog pages can be found in Google page 1 search results too. Sometimes even 0 Google page rank blog pages.
If it's just the search result position you want to see then type a phrase from your page you want to check into the search bar on Google, click "search" and then scroll down or through the pages of results until you find a title, description and link to your page.