datagirl is correct; the time can vary by store. 30-40 minutes when it’s organized, 1+ hour if it’s not. never above 2 hours. and the bonus is just a fee that gets put in their reimbursement section for whatever reason. no purchase is necessary.
count 100 items, flip the 101st hanger (or shoe) backwards/around so you know where to stop. go back to the beginning of the rack where you started and then look at the clothing sizes for missized items. every missized or miscategorized item, flip the hanger/item around. once you get to your 101st hanger/item, go back and count how many missized items you flipped. if it’s over 7(?) items in a total category you have to mark down in your notes what was missized (small shirt in large section, bra in junior tops, etc.) then do this for 5 total categories. if there aren’t enough items in a selected category, count to however many there are, then use the backup category to get to 100. so if there were 80 mens pants as a required category, you would count 20 backup category items.
i used to do a bunch of these sizing audits until i decided i had counted enough missized clothes at stores that couldn’t care less to organize them month after month after month.