Where they are performing depends on the day. Last week they were outside Wonderground with shows at 5:30, 6:30, 8, and 9. You can follow them on Instagram at westbeatsings and they will often post their location and times.
I've seen them several times, both as SCAREolers and at other times of the year. They are great and very fun to watch. To be honest, they don't absolutely blow me away, and my personal favorite performer is no longer performing with them. But they all certainly have talent and as scareolers they put on a great show. Definitely worth checking out.
We saw them on Friday (I think) and they were outside near Hagaan Dazs. We stayed and watched a snippet of their performance because they were doing songs from Hocus Pocus, and I honestly wasn't very impressed with them. We left after only a few minutes.