The dose is a term used to refer to the amount of coffee ground used to prepare a serving of coffee.
As different cafes or baristas would have their own recipes, it is no surprise to find that there is no standard dose used by the majority of cafes.
Even different espresso machines might require different doses for brewing due to the manner in which they are built to operate.
Cafes or bars that serve lattes, cappuccinos, espressos, or any type of coffee that uses coffee ground would often include the dose as part of the recipe for internal use.
However, there are a lot of dynamics involved in brewing coffee of a particular taste.
So the dose while important, is not the most important part of a delightful cup of latte.