[1] Scully began his career with the Ospreys academy, before joining Worcester Warriors in 2018.
[2] Scully signed his first professional contract for Cardiff Blues in February 2020, joining the side from Worcester Warriors at the end of the 2019–20 season.
[4] He joined Cornish Pirates in 2021 on a loan, but was injured early in his stint and only featured four times for the side.
[7] Scully made his competitive debut off the bench against the Bulls on 26 November 2022.
[8] While with the Ospreys, Scully has played for feeder club Swansea RFC.