Most $2 bills from 1976 are worth their face value because they are not old enough or rare enough to be collectible. A $2 bill from 1976 is worth more than $2 only if it is stamped, uncirculated, has a low serial number or has a star symbol.
Soon after the release of new $2 bills in 1976, the post office cancelled some of them with a 13-cent stamp. These stamped bills are fairly common, but they sell for a small premium. Uncirculated packs of 100 $2 bills are also somewhat common, but they also sell for a premium.
Bills that have low serial numbers have significantly more collectible value. The rarest and most valuable $2 bills from 1976 have both a low serial number and a star symbol at the end of the serial number. Uncirculated star notes from Minneapolis or Kansas City are the rarest and most valuable type of $2 bill from 1976.