Is there a specific number of backlinks i need for my pr to go up i really want it to go up i have nearly 2000 backlinks says estibot.com how much do i need?
Googles webmaster tools will give you the best idea of the number of backlinks you have. As for PR, it doesnt update all that frequently. PR is just a number, your rankings are what matter. Check how many backlinks your competitors have with Yahoo site explorer. Try to get the same links from similar places. Build more links than they have, and you will surpass them in rankings eventually.
If you have all PR 0 or PR 1 backlinks, then your pagerank will take forever to go up... find some dofollow backlinks that have high PR, and your page rank will definitely go up.
You can get to a PR3 by submitting to free directories. Then get a few other links from sites related to yours and you can get to a PR4 and start seeing some search engine traffic. If you have good content then you'll start to get links from people who found you in the search engines and that's when your site's PR and rankings will really take off.
finding PR3 and up pages to build links will help your PR go up... you never really mentioned what PR you want to get but just keep working at it and you should see a positive change in the next PR update.