What is the value a Two Dollar bill?

Answer 1

In general, their value is $2. I often get some from the bank, and have found that they will pay for exactly $2 worth of goods or services.

More

Many people think US $2 bills are valuable because they're not often seen in circulation. But contrary to popular belief, the denomination hasn't been discontinued and hasn't been withdrawn. They're still being printed, but in comparatively small numbers. Even so, tens or even hundreds of millions are printed for each run so modern ones are never going to be rare.

In some rural parts of the country people believe $2 bills are "evil", "cursed", or "bad luck". Those myths came about during the late 19th century when the denomination was heavily used at race tracks and in brothels where, in those pre-inflation days, $2 was the most common rate. In reality they're nothing but ordinary bills, no more "bad" than $1 or $5 bills and a LOT more interesting.