What is the value of a Mexican 500 dollar bill in the US?

Mexico uses the "$" sign to indicate pesos rather than dollars, which tends to mislead Americans and Canadians who are used to dollar-denominated currencies.

Your bill's value depends a lot on its date. If it's dated 1993 or later, it's a modern bill whose value is based on the current exchange rate of US dollars to Mexican pesos. Exchange rates change every day so any specific answer posted here becomes out of date almost immediately. While it's not Answers.com policy to say "use the Internet", that's the best approach in this case. You can check a site such as www . xe.com, CNNMoney, etc. for the latest conversion factors.

If it's older, you should have it checked by a dealer or person who collects Mexican currency. Mexico revalued the peso in the early 1990s by lopping three zeros off the old peso, meaning an older bill that's not a collectible could be worth only 1/1000 as much as a more recent one of the "same" denomination.