Not enough information. Please post a new question with the bill's date. If there's a small letter under the date, include that as well. You do not have to copy the serial number - that doesn't help to ID a bill.
Value of 1963 one dollar star note
A twenty dollar bill with a star on it can be worth different amounts depending on the date. A 1914 twenty dollar bill with a star on it is worth 1000 dollars.
A 2 dollar bill with a star symbol on it will typically have a higher value to collectors than a regular 2 dollar bill. The value can vary depending on the condition of the bill and the demand from collectors, but it can be worth more than face value.
$20.00
No, the star at the end of the serial number on a dollar bill indicates that it is a replacement note. These bills are issued to replace damaged or misprinted currency and do not affect the value of the bill.
A dollar bill with a star next to the serial number is called a "replacement note." Its value is the same as a regular dollar bill - $1. However, some collectors may be willing to pay a bit more for these unusual bills.
"Star notes" can be worth a small premium over a standard bill's value. Depending on condition it might retail for $55 to $60.
It's still worth $100.
In decent condition, it has a collector value of a few dollars.
Star notes generally have some additional value to collectors beyond face value. The amount is determined by the series (date) and condition.
If has a relatively new date (e.g. 1996 or later) it might be worth a few dollars above face value to a collector of "star notes". If it's older, please post a new question with the bill's date and whether there is a small letter next to the date.
A 1934 A green seal one hundred dollar bill is only worth face value unless it is in perfect mint condition. If it has a star following the serial number, it could be worth up to $200 depending on the serial number and condition.