During Scully's time at West Ham, he appeared as a triallist for Norwich City and Nottingham Forest.
[5] On 15 February 2020, on his first start for Lincoln, Scully scored his maiden goal for the club in a 4–3 loss against Accrington Stanley.
[10] His playing time was limited with the club throughout 2023–24 as the side went on to win the league title and promotion to the EFL Championship.
On 30 August 2024, deadline day of the 2024 summer transfer window, Scully joined EFL League Two side Colchester United.
Scully's father, Tony, was a professional footballer, playing for Cambridge United, Crystal Palace, Manchester City and Queens Park Rangers.