Need one? No, but if you’re worried about the potential of scratches on the screen I’d get one. I use tech armor plastic screen protectors cause I don’t like tempered glass protectors.
I like having one on but with these new phone designs and curved screens glass screen protectors look like crap. I’m tempted to tear mine off because there’s gaps between the glass screen protector and the case with dust build up, HUGE annoyance!