Please post a new, separate question with the bill's date and seal color, and provide the letter if any that's next to the date. No US $20 bills ever had a series letter G; you're most likely looking at the Federal Reserve District letter that identifies the district that distributed the bill.
$20
It's worth $2.
Please post a new question with the bill's date
one dollar
All series 1976 $2 bills are still worth face value.
How much is a series of 1917 act or 1863 series one dollar bill worthHow_much_is_a_series_of_1917_act_or_1863_series_one_dollar_bill_worth
$20
100usd
No such thing.
5$
Please post a new question with the bill's date
An A series in avg.condition is worth around $12.50.
It's worth $2.
That depends on the series (date) and condition. The series 1986 is still worth two dollars.
Please post a new question with the bill's date
It's worth exactly two dollars.
500 $ worth