Apolinario made his professional debut on 10 June 2017, defeating fellow Filipino boxer Prince Canonero via first-round technical knockout (TKO).
More than three months later, Apolinario returned to flyweight and defeated fellow Filipino boxer, Charles Canedo via a round 2 technical knock out (TKO).
[9] Less than two months after his previous fight, Apolinario defeated fellow Filipino boxer, Joan Imperial via a knock out (KO) in 1:53 of the first round.
[15] On 21 November 2020, after an eleven-month rest due to the COVID-19 pandemic, Apolinario defeated Bonjun Loperez via a referee technical decision (RTD) in the fourth round.
[16] On 16 July 2021, less than eight months after his previous fight, Apolinario defeated Charlie Malupangue winning a technical knock out (TKO) in the fourth round.
[21] On July 29, 2022, Apolinario won the vacant IBO Flyweight title by defeating Gideon Buthelezi via a knockout (KO) in the first round.
During the fight, Apolinario scored a second-round knockdown and later suffered an injury to his left elbow after accidentally hitting Mosinos' head.