I can't remember as it was about a year ago. But it was a "30 day squat challenge" where the amount increased every day. You would be better off going to a gym and getting advice. I was very unhappy to not run but I also swim so did some of that instead. Though mainly pull to not upset my knees!
Just doing squats over and over again will probably not help with anything except getting good at squats. You’d probably be better off putting together a well-rounded plan with a variety of lower body exercises.
I do quite a lot of squats (granted not daily), and can't say it's changed my bum particularly. But if you do it, make sure your form is right (weight in heels - you should be able to lift your toes comfortably), don't let your knees go past the line with ankles.
Fitness Blender do loads of bum strengtheners - could look there - I definitely feel it when I've done one.
It is worth remembering that problems can ensue from this sort of repetitive exercise: knees, spine, hip etc. And some of these appear later in life and you might wish you had not done them and settled for the ass you have!
Really, people get repetitive strain injury from just typing! The load on your joints when you perform these moves is huge. The recommendation seems to be to do exercise that replicates (or siinply is) normal activity: running, walking, swimming etc, although even these can create problems if done to excess.