Does BING or Yahoo have a PR-like value?

In the process of building a scrapebox-like tool and so far the whole thing is based around Google. So far it scrapes the SERPs, picks up pagerank, and then checks for any added-on components (external add-ons) to run.

But then I had a thought: What about BING or Yahoo. Not that they're really all that important to most people, but I think it would just look kinda cool as a feature. Is there a way to get a PR-like ranking for them?

Yes, bing have a pr-like value. My site is 5/5

yahoo have webranks.

please, anyone can tell what kind of it ?

there is no pr toolbar or known measure for yahoo bing; all you can assume is there are the same as google.