After captaining the Australian Schoolboys Rugby Union side on their 1986 tour of New Zealand, he made his Test debut for the Wallabies against Scotland in 1988. He earned five international rugby union Test caps between 1988 and 1989 as a flanker. He became prominent with some fearsome displays of running against the touring British Lions in 1989 and he is remembered for a magnificent try scored in that series, running through tacklers at will.
He played 120 games for the Dragons from 1989–1996 and played in 3 losing Grand Final sides - 1992 & 93 against the Brisbane Broncos and 1996 against Manly.
In 1997 the Back rower joined the Sydney Roosters playing 45 matches in his 2 seasons at that club. He represented Australia in Rugby League in 1991 in a Test series against Papua New Guinea. His international rugby league debut in the 1st Test against PNG in Goroka saw him become Australia's 39th dual code rugby international following Ricky Stuart and preceding Andrew Walker.
He remains the last Australian dual code international to have debuted in rugby league following a rugby union representative career. All four since have made the converse switch.
Since his retirement in 1998, Scott has pursued a business career.