1 dollar
It's still worth one dollar.
Believe it or not, it's worth exactly one US dollar.
The 2001 American Buffalo silver dollar was issued as Uncirculated (D mintmark) & Proof (P mintmark). Both have the same current market value of $100.00.
None of the Sacagawea dollars regardless of date or mintmark struck for general circulation have more than face value. Only proof and uncirculated collectors coins sold from the Mint have premiums
The 2001 American Buffalo silver dollar was issued as Uncirculated (D mintmark) & Proof (P mintmark). Both have the same current market value of $100.00.
Both versions (Proof & Uncirculated) of this coin have the same average retail value of $115.00
Please look through the bills in your wallet. 2001 is an extremely common date. Unless it's in absolutely pristine uncirculated condition, it has no extra value.
It's worth one dollar.
In perfect, uncirculated condition, a 2001 $10 US Dollar note is worth $20. In normal used condition it is worth exactly $10.
Face value.
It is worth $1 unless it is uncirculated.
A star note would have a slight collector value above face value, but only if the bill is in crisp uncirculated condition. It's not old enough of a series to be worth more.