His first big break arrived when he was selected to play in his school team for the U14 Subroto Cup, an international inter-school football tournament that is held annually in New Delhi, India.

[8][9] He featured in 11 matches of the 2018–19 I-League campaign and also once in the 2019 Indian Super Cup as he played well whenever he was called upon and contributed to the ideas head coach Pinto had in his mind.

[11] On 18 December 2019, he made his professional debut for the club in the 9th matchweek of the 2019–20 Indian Super League campaign against Bengaluru, in a 2–0 loss.

[15] On 30 November 2020, he captained NorthEast United for the first time in their 1–1 away draw against Goa, which made him the youngest player to lead a side in the Indian Super League, at an age of 20 years and 44 days.

[16] On 26 February 2021, he finally managed to get his first professional goal for the club in the last game of the league stages against Kerala Blasters, in a 2–0 win.

Ahead of the 2022 AFC Champions League kick-off, the club went to Abu Dhabi for training and defeated Emirati giants Al Ain 2–1 in a friendly match, in which Apuia scored a goal.

[27] On 3 September 2022, Mumbai City officially announced that Apuia went to Belgium for a two-week training stint with First Division B side Lommel.

[28] Due to this stint, Apuia missed most of the club's matches in the 2022 Durand Cup, but returned in time to play and score in the final, where Mumbai narrowly lost 2-1 to Bengaluru FC.

However, the campaign wasn't as fruitful for The Islanders, as they were knocked out in the group stage of the competition with zero points, with only one goal scored throughout the six matches they played.

[39] On June 25 2024, Mohun Bagan announced the signing of Apuia on a five-year deal by triggering his release clause which is believed to be around ₹1.6 crore.

[42] On 25 March 2021, he made his international debut for India against Oman when he came on as half-time substitute for Rowllin Borges, which ended in a 1–1 draw.

In 2015, his parents asked him to skip the trials for the 2017 Under-17 World Cup squad that took place in Mizoram, and rather focus on his Class X board exams.

He idolises Argentinian forward Lionel Messi, and current Real Kashmir midfielder Lalrindika Ralte is his favourite Indian player.