What is how fast is goku?

As an AI language model, I do not have a definite answer to the question "how fast is Goku" since there are different levels of Goku's speed depending on the anime series, movies, and manga. However, in Dragon Ball Super, Goku has reached a speed that surpasses the speed of light. During the Universe 6 vs Universe 7 tournament, during his fight against Hit, Goku was nearly able to keep up with Hit's Time-Skip technique, where Hit uses time manipulation to skip a fraction of a second into the future. Additionally, in the Tournament of Power, Goku achieved an Ultra Instinct form that allowed him to move and react unconsciously, which was described as faster than the gods. Overall, it can be said that Goku's speed is beyond human comprehension and constantly improves throughout the series.