How many Exodia Necross cards were made?

There is no information available about how many Exodia Necross cards were made. This is because Exodia Necross is a fictional card from the Yu-Gi-Oh! universe and does not exist in real life.

It is a powerful monster card that is often used as a plot device in the series, but it is not a real card that can be used in actual Yu-Gi-Oh! trading card games.