He played for the Cronulla-Sutherland Sharks, St. George Illawarra Dragons (with whom he won the 2010 NRL Premiership), the Newcastle Knights and the Parramatta Eels.

He scored on debut and was reported for contrary conduct against Cameron Smith, though he would be found not guilty at the tribunal the following week.

Johns had allegedly made a racial comment in reference to Queensland centre Greg Inglis, while talking to Scott about tackling him, which triggered teammate Timana Tahu's exit from the New South Wales camp.

He played in the Dragons' 2010 NRL Grand Final-winning team defeating the Sydney Roosters, starting in the second-row.

[6] On 9 March 2012, Scott signed a four-year contract with the Newcastle Knights starting in 2013 to rejoin former Dragons coach Wayne Bennett.

[9] In April 2015, Scott asked for a release from the final two years of his Knights contract on compassionate grounds, due to his son requiring medical assistance that he could receive at the Children's Hospital in Westmead.

[16] On 1 September 2017, Scott made a shock return to the Parramatta side to play against South Sydney, it was initially thought he would be out for the rest of the season.

Scans confirmed that Scott had ruptured his left anterior cruciate ligament, ruling him out for the remainder of the season.