How many Aztec glyph languages were there?

There wasn't one single "Aztec glyph language". The Aztecs, or Mexica, used a system of writing called Nahuatl hieroglyphs, which was based on a combination of logographic, syllabic, and phonetic elements.

However, this system was used to write various Nahuatl dialects, which were spoken by different groups within the Aztec empire.

While it's not possible to give a precise number of "glyph languages", it's important to understand that the Aztec writing system was a single system used to represent different dialects of the Nahuatl language family.