I saw this question posted awhile ago and did some hunting on Google Scholar. Unfortunately, I could not find anything that discusses ancient Maya typos. What I can tell you, though, is how much labor may have gone into carving hieroglyphs into stone.
Elliot Abrams is an archaeologist who really pioneered the study of architectural energetics. Architectural energetics is the study of labor through an analysis of a building. You measure a building, find the volume of materials needed to construct the building, and use rates of work taken from replicative experiments to estimate the amount of time it took to procure construction material, transport the material, and ultimately construct a building. This is what my thesis is on, but I will stick to Abrams' case study.
In Abrams' career he has examined numerous buildings at the site of Copan, Honduras. In his 1994 book How the Maya Built Their World, Abrams examined residential structures that ranged from a palace for Copan's 13th king to small platforms used by commoners to construct perishable buildings. For Abrams' analysis of the palace, labeled Structure 10L-22, Abrams had to estimate the amount of labor it would take to create the decorative sculpture found at the palace. The sculpture found at the palace ranged from simple decorative elements like bars and dots to more complex designs like glyphs and faces.
To create a rate of work, Abrams employed a part-time sculptor from the town of Copan. Using stone tools and locally quarried tuff, a light, porous rock formed by consolidation of volcanic ash that hardens when exposed to air, used in the construction of Copan's buildings, Abrams found that the sculptor was able to replicate complex designs like glyphs and faces at a rate of 89 cm^2 an hour. So, if you had a wall that was 2.5 m high by 5 m wide (125,000 cm^2) and a sculptor worked eight hours a day, it would take a sculptor 175.56 days to carve. This assumes the sculptor made no mistakes and knew what he wanted to write beforehand. This rate of work would change depending on the material and skill of the sculptor.
I know this is only a partial answer and may be less than satisfactory, but perhaps it provides a sense of scale and time needed to create such things like hieroglyphs on a wall.
Another question. Would there have been punishments?
Another question. Was the ruling class taught writing and reading by scribes and priests?
Is there evidence that glyph carvers would write things out first in charcoal and verify before carving?