Two dollar bills in general are worth - $2.00. They are NOT rare.
http://currency.ha.com/c/ref/worth.zx
"$1, $2, $5, and $100 Red Seals, 1928, 1953, 1963, and 1966
Although some of these notes carry more of a premium than others, most $2 and $5 Red Seals that are seen are circulated notes from common series that carry very little premium over face value. All $1 Red Seals are scarce and are quite valuable in higher grades, while $100 Red Seals (although relatively modern) carry a premium of 20% to 40% even in circulated condition. Again, there are several scarce issues among these notes, and we recommend the Standard Guide to Small Size U.S. Paper Money (1928 to date), by Dean Oakes and John Schwartz, for more information."