The best case scenario for this song is 2 weeks at #1. However, I do not think it will reach #1. It will peak at either #2 or #3, with How To Love being one of the songs that block it.
TBH I kinda don't think it will get that #1...cuz you see the popbar and the airplay.
Actually, if it doesn't get there y'all don't have to complain cuz it's a 5th single..and it still has amazing sales and crazy airplay and is already in top 5...WHO ELSE?