Yes. They're worth 100 US dollars each.
$5. Both designs were printed under the same series date. To explain, U.S. bills are dated by "series", not by year of issue. In modern practice the series corresponds to the Treasury Secretary and Treasurer in office at the time the bills were first printed. When the new $5 bills were introduced the same officials were in office as before, so the same series year was used.
If you found it in change, face value only. Hundreds of millions were printed. A nice uncirculated one might sell for all of $3. In fact, all $2 bills dated 1976 and later are worth only face value if circulated.
Up to a whole $2. The Treasury is still making series 2003 bills.
All $2 bills dated 1976 and later are worth only face value if circulated. A brand new, uncirculated one sells for about $3 at a dealer.
All US $2 bills dated 1976 and later were printed as green-seal Federal Reserve Notes. In circulated condition they're only worth $2. Uncirculated ones might retail for $3 to $6 depending on their date. Note that there are no 1991-dated US bills of any denomination. $2 bills were printed in the 1976, 1995, 2003, 2003A, 2009 and 2013 series.
As opposed to a fake one? Uncirculated $2 bills dated 1976 or later retail for about $3.
Yes, there were $2 bills for series 2003. In case that sentence fragment is attempting to ask about the bill's value, it's worth $2.
Please check your bills again and post a new, separate question for each date. The only dates in that range are 1999, 2001, 2003, 2006, and 2009, and all of them have green seals. The last red-seal $100 bills were dated 1966.
In general, any U.S. bill found in circulation with a date later than the early 1970s will be worth face value. You should be able to find plenty of bills dated 2000 or later in change.
There weren't any series letters on 2003 $1 bills. You may be looking at the Federal Reserve District letter instead. In any case a 2003 $1 bill is too new to have any added value, even in uncirculated condition.
The last $5 silver certificates were printed in the 1953 series, and the last silver certificates of any denomination were dated 1957. Anything dated 2003 with that wording on it is almost certainly a privately-printed fantasy or novelty item, with no collector value.
Face value for all of them.