The worth of the 2 dollar bill will depend on what country you're in. If you're from the US, then 2 dollar has the same value. In Asian countries like the Philippines, 2 dollar bill is equivalent to 82 pesos because 1 dollar has an exchange rate of P41 pesos.
The value of the two-dollar bill is just that - $2. Though the two-dollar bill is not in regular circulation right now, the U.S. Treasury (http://www.treasury.gov) reports that the bill is still being printed today and is worth its face value.