The "steps " in all dances are allocated specific values in timing .
In simple terms.. Slows are 2 beats.. Quicks are one beat .
The more complex "speed " of some steps ,in many dances, are often divided into half and 1/4 notes.
In addition, there are syncopations that are being used in specific instances as in 1,2, AND 3 .
May I suggest you find a competant teacher, who will give you a visual e.g. of the differences that are in current usage .
Applying the various "speeds " is, often more complex than the written word.