It is worth two dollars.
It depends on the specific denominations of the bills. For example, it could be six one-dollar bills, or two five-dollar bills and four one-dollar bills.
2 dollars each
Face value.
The US never made black 2 dollar bills.
It's still worth 2 dollars.
As opposed to fake uncirculated two dollar bills? That's very unlikely because $2 bills are generally not worth counterfeiting. In any case, please see the Related Question for more information.
$100
If you had a sheet of uncut two dollar bills, they would be worth far more than just two bills. Depending on their condition, the bills together would fetch between $2 and $10.
Obviously worth two dollars.
They are only worth 2 dollars. They are uncommon though.
Absolutely, they'll be worth a whopping $2.00 But I cannot see how they can deface the $2 bill. By the governments rules, you can't spend that bill anymore.