[3] He made his debut for Benfica's reserve team in a Segunda Liga match against Vilafranquense on 2 February 2020, with manager Renato Paiva praising him as one of the "future stars of the club".

[5] On 2 November 2021, Bernardo made his first-team debut coming on the 77th minute in a 5-2 Champions League group stage defeat at Bayern Munich.

[6] Later that week, on 7 November 2021, he made his Primeira Liga debut coming on for injured João Mário on the 23rd minute for a 6–1 home win against Braga.

[12] With the Portugal under-17s, Bernardo took participated in the 2019 UEFA European Under-17 Championship in Ireland, playing four matches, scoring one goal as the team lost in the quarter-finals to Italy.

[13] On 6 September 2021, Bernardo won his first cap for the under-21 side, replacing André Almeida in the 73rd minute in a 1–0 victory against Belarus for the 2023 European Championship qualification campaign.