I did an 18 hour stream a few days ago and my view count was at 2 almost the whole time, will this affect my average concurrent view count by a lot and if so how can i change it?
probably
You can’t “modify” the data Twitch has stored for your stream. So you’d have to stream more to change the “score” I suppose
Additionally: this is the third party developers forum. We can’t help too much with first party issues/website stuff
Further advice and help at https://help.twitch.tv/