In August 2023, as well as featuring for the club in the EFL Trophy, Gore was included in Manchester United's first-team squad and on 26 August for the first time was named as a substitute in the Premier League match against Nottingham Forest.[8][9] On 26 September, he made his debut against Crystal Palace in the EFL Cup.[10] He made his league debut on 26 December, when he came on as a 94th-minute substitute for Christian Eriksen at home to Aston Villa.[11]
On 23 January 2024, Gore joined League One club Port Vale on a six-month loan.[12]David Flitcroft, the club's director of football, said that higher level clubs had pursued Gore but that United "selected us based on how we play and how we support young players".[13] He injured his quads on his debut at Vale Park, a 1–0 defeat to Portsmouth on 27 January.[14] Speaking in April, manager Darren Moore confirmed that Gore would not be returning to the club.[15] He underwent surgery on a dislocated shoulder in June 2024 and returned to training five months later.[16][17]
On 31 January 2025, Gore joined League One club Rotherham United on loan for the remainder of the 2024–25 season.[18] He played one game for the Millers before returning to Manchester to receive treatment for a hairline foot fracture.[19] Rotherham manager Steve Evans initially described it as "the strangest thing in the world" and that "we didn't do enough in training for him to have a sore nose let alone a sore foot".[20] Evans later stated that he had discovered Gore had suffered "a delayed reaction" and "he wants to play... he needs to be playing".[21] He returned to fitness in April.[22]
On 17 July 2025, Gore returned to Rotherham United on a season-long loan deal.[23] In contrast to his previous loan spells, he managed to establish himself in the first XI.[24] The loan was such a success that manager Matt Hamshaw feared Gore would be recalled in January and loaned out to a club higher up the football pyramid.[25] Gore was highly praised for his performances across the 2025–26 campaign.[26]
International career
In February 2020, Gore scored a goal for England U16 in a victory against USA.[27] The following year saw him represent England at under-18 level.[10]
In October 2023, Gore was called up to the England U-20 side for matches against Portugal U-20 and Romania U-20.[28] He made his U20 debut on 12 October 2023 during a 2–0 defeat away to Romania.[29]