It depends on what type of videos: when I make my vlogs, that's a whole day of filming, and half a day of editing the following day. If I'm making a music video/track, I've gotta write the lyrics, find/make the beat, record then master the track, edit the video and upload. It all depends on what type of video you're making and how much goes into the video!
Mine usually take anywhere from 1-15 hours depending on what it is I am creating!