In a way, it is. The movie takes inspiration from real events and emotions, but it's not a straightforward account of every detail. Some parts might be exaggerated or reimagined for the screen.
Yes, it is. 'Honey Boy' is based on the real-life experiences of its writer and actor.
Well, it's a semi-autobiographical story. So, it has elements of truth drawn from the creator's life, but there might be some fictionalization for dramatic effect.