It's best not to try. A circulated 1917 US $2 bill can be worth anywhere from $50 to $100. Anything you could do at home (ironing it, pressing it between books, etc.) might actually do more harm than good to its value as a collectible. You'd need to consult with a currency dealer who can examine the bill in person and determine whether any change would be safe.
The value really depends on the condition of the bill.
The US didn't print any $100 bills dated 1917. Please check your bill again and post a new, separate question.
The US didn't print any $20 bills dated 1917. Please check again and post a new, separate question.
The first US 1 dollar bills were printed in 1862. If your bill is actually dated 1917, there's more information at the Related Question.If the date isn't 1917, please post a new, separate question.
Please check your bill again and post a new, separate question. There were no federally-issued $10 bills with that date.
The value really depends on the condition of the bill.
The US didn't print any $100 bills dated 1917. Please check your bill again and post a new, separate question.
Ebay, local coin shop, online dealer
The US didn't print any $20 bills dated 1917. Please check again and post a new, separate question.
The first US 1 dollar bills were printed in 1862. If your bill is actually dated 1917, there's more information at the Related Question.If the date isn't 1917, please post a new, separate question.
Please check your bill again and post a new, separate question. There were no federally-issued $10 bills with that date.
The last $2 silver certificates were dated 1899. The red seal and legends on your bill identify it as a United States Note, a form of currency issued until the late 1960s. Please see the question "What is the value of a 1917 US 2 dollar bill?" for more information.
Irish people call the US Dollar bill, a dollar or a dollar bill.
It depends on the condition of the note, such factors as folds, creases, staining, tears, separation, etc. and the signatures on the front of the note.
A US Walking Liberty Half dollar dated 1917 will weigh 12.50 grams.
a 1917 us dime is called a mercury dime. its not that rare so it is worth about a dollar
The US has never produced a $4 bill, though Canada once had such a denomination.