The serial number of a bill is almost never a determinant of its value. You need to provide the bill's date and, if it exists, the series letter (a single letter after the date). Also, how worn is it? Just folded, torn anywhere, or is it crisp and unfolded?
Face value.
A more useful bit of information to determine the bill's value is the series (date) on it, rather than the serial number. Now if it's a series 1976 or later, it's worth $2.
That's SERIAL number, not "cerial". The double letter in front of the number indicates it's a recent bill (1990 or later) so assuming you found it in circulation, it would only be worth face value.
$5 to $10 depending on condition. Also, a bill's serial number almost never affects its worth. The date, series letter, and condition are the major factors determining value.
Nothing. You have to have both serial numbers before it has value...unless you tape it back together.
Depends on year and how low the serial number is.
The percentage of a partial bill really has little to do with its value. Any bill is worth its face value if it contains a complete serial number and any part of the other serial number.
$10
$20
The serial number alone isn't enough to assign value, but rather the series year and the condition. Without more information, it's assumed to be worth one dollar.
The value is more dependent on the year (series) of the bill. The serial number by itself isn't enough information.
Face value.
As you have seen in many other postings, a bill's serial number almost never has anything to do with its value.
A 20-dollar bill with one serial number is still worth 20 dollars, as the value of the bill is determined by its denomination rather than the number of serial numbers it has. Each U.S. currency note has a unique serial number, but this does not affect its face value. Therefore, regardless of the serial number, the bill retains its worth of 20 dollars.
$20
$5
The value is determined by the series (date) and condition.