This question eludes many, but I’m going to say that each F-16 rated gyroscope has 4 gyros. This is based off this same question on another part of the site that has an answer. Finding the actual number proves to be challenging, particularly when you do not have a lot of knowledge beforehand about this kind of thing.
However, general knowledge lets us know that gyroscopes are used to keep things stable when they can go in any and all directions. They help keep the item or vehicle from spinning uncontrollably and spiralling out of control in space, on the road, etc. It’s mostly used in aeronautics, on things like airplanes and spaceships, even rockets.
Other than this general knowledge, I cannot comfortably answer this question. Defer to an expert if possible.