One of the scariest Wattpad short stories I've read is 'The Cemetery Watcher'. It's set in an old cemetery where a caretaker starts to notice that some of the graves are being disturbed at night. He decides to stay up and watch, and what he discovers is truly horrifying. Another interesting one is 'The Cursed Mirror' where a girl looks into an old mirror and finds herself in a nightmarish world filled with her worst fears.
Well, 'Midnight Stalker' is a great Wattpad scary short story. In this story, a young woman keeps feeling like she's being watched at midnight every night. As the story progresses, she realizes that there is an actual entity following her. Also, 'The Shadow Man' is quite good. It features a man who notices a strange shadow that seems to have a life of its own and starts to haunt him in the most unexpected ways.
Sure. 'The Haunted House on Elm Street' on Wattpad is really scary. It's about a group of friends who enter an old, abandoned house and start experiencing all kinds of spooky things like cold drafts, strange noises, and apparitions. Another one is 'The Doll in the Attic'. It tells the story of a girl who discovers a creepy doll in the attic of her new home and then all kinds of terrifying events start to unfold around her.