How much relevant is VCT Masters Copenhagen

I don't watch valorant at all. How much relevant is this event? Is it like a major, or more like off IEM Katowice/Cologne/Blast World Final?

yes

better than kato 14

Lower then major, bigger than everything else (in relation)

If OpTic gets out then it's an irrelevant event

Its an international lan that placements go to points that determine if they get to go to champions (the largest event of the year)

Riot is a dumb company so there are only 3 events in the entire year. Obviously with this few events, any of the three events are gonna be super important.