How do I get that Trophy icon thing?

@VanshKalyani we know that you deleted the first post. If you already knew, then why did you do that?

@VanshKalyani oh sorry.

to get the trophy icon you need to top 100 in the leaderboard in any variant

true

Also there are two unique trophies:
lichess.org/faq#trophies

You should be ranked in the tournament!