Well, Scarface has elements of a true story. It's loosely based on real - life events and figures. The story of a rise to power in the criminal underworld, like what we see in the movie, had parallels in the actual experiences of mobsters during that time. But again, it's not a documentary, so there are fictionalized parts for the sake of entertainment and creating a more engaging narrative.
No, Scarface is mainly a creation of the writer's imagination. While it may incorporate elements that seem realistic, it's not a direct retelling of a true story. The plot and characters are crafted for entertainment purposes.
Scarface had a basis in real criminal stories. However, it was heavily fictionalized and embellished to create a more compelling and cinematic narrative.