Scott gained a degree in cinematography at the Université du Québec à Montréal in 1991. His first widely seen work was a series of commercials for cheese made between 1995 and 1998. In 2000, he played the theatrical role of Monsieur Pearson in the play Propagande, written by Stéphane E. Roy. In 2002, he wrote episodes for the television series Le Plateau, in which he also played the role of François Chamberland.
In 2008, Scott produced his first feature film, Sticky Fingers, which he also wrote.
Scott won the Audience Award at the 2004 Sundance Film Festival for Seducing Doctor Lewis. He has been nominated for the Quebec film industry's Prix Jutra and the national Genie Awards four times each; at both ceremonies, Scott and Petit won the 2012 awards for Best Original Screenplay for Starbuck.