Usually a week from blue eyes to shedding. Once their eyes clear up from the blue cloudiness, they'll shed usually within a few days.

If you're asking how long it actually takes them to shed their skin off, I dunno. Not too long, I don't think. I checked on mine when it was about to shed, and no signs of the skin peeling yet. Then I went back an hour later and she was done. Didn't expect it.