Born in Foios, Horta Nord, Valencian Community, Torres joined Valencia CF's youth setup in 2006, aged six. On 15 October 2016, while still a junior, he made his senior debut with the reserves by coming on as a substitute for Grego Sierra in a 0–2 Segunda División B home loss against Mallorca B. Torres was definitely promoted to the B-side ahead of the 2017–18 campaign, and scored his first senior goal on 26 August 2017 by netting his team's second in a 4–1 home routing of Peralada-Girona B. On 5 October, after being strongly linked to FC Barcelona and Real Madrid, he renewed his contract, which increased his release clause to €25 million. He was also promoted to the first team on 1 January 2018. Torres made his first team debut on 30 November 2017, replacing fellow youth graduate Nacho Gil in a 4–1 home routing of Real Zaragoza, for the season's Copa del Rey. He made his La Liga debut on 16 December, playing the last nine minutes in a 1–2 loss at Eibar, becoming the first player born in the 2000s to play in the league. Torres made his European and Champions League debut on 23 October 2018, starting in a 1–1 draw against Young Boys. He scored his first La Liga goal on 19 January 2019, ten minutes after coming on as a substitute in a 2–1 victory against Celta Vigo. He remained on the bench as Valencia defeated Barcelona 2–1 in the 2019 Copa del Rey Final at the Estadio Benito Villamarín in Seville, on 25 May. On 5 November 2019, Torres scored his first Champions League goal, netting his team's last goal in a 4–1 home win against Lille, becoming Valencia's youngest goalscorer in the competition's history as well as the first player born in 2000 from Spanish teams to score in Champions League. On 23 November 2019, Torres marked his 50th appearance in La Liga for Valencia with a 1–2 away defeat against Real Betis, becoming the youngest Los Ches player to play 50 league games at the age of 19 years and 324 days, breaking 40-year old record of Miguel Tendillo.
Regarded as a talented and highly promising young offensive winger in the media, Torres has been described as a traditional wide midfielder, due to his work-rate and penchant for running to the touchline, although he is also capable of cutting inside towards the centre of the pitch; due to his role, nationality, and playing style, Simone Lorini has likened him to Joaquín. Torres is known in particular for his pace, creativity, technique, and his close control at speed, which enables him to take on opponents and overload the flanks, while his height, athleticism, and heading ability also make him a strong aerial presence. Although he primarily plays on the right, he is capable of playing anywhere across the attacking line. In 2018, Spanish football journalist Guillem Balagué noted that Torres "is a dribbler, fast on the wing, can play on either wing, and he has got ability and intelligence. He can also play inside if needed, so he is a modern winger." The Valencia academy director of recruitment, José Giménez, instead stated: "He's powerful, quick, steady with the ball at his feet and strong in the air. He's unpredictable. When he's running with the ball at his feet he can go on inside or outside his man because he is two-footed. He can cross, finish and shoot."
