In the area of training (for a sporting event, perhaps) the term is reps, short for repetitions:
rep noun (EXERCISE) (usually plural)
used for saying the number of times that a particular exercise should be repeated in a sports workout. Rep is short for repetition https://dictionary.cambridge.org/us/dictionary/english/rep?q=reps
In publishing, successive print runs are called printings.
The US publishing convention is to print, on the publication data page, the numbers from 1 to 10 in reverse order. For each printing after the first, the rightmost number is deleted, so the series shows the number of the printing. The words “Second Printing” or whatever number is appropriate often appear.
The word iterations also refers the number repetitions of a series of events.