There are two ways a Facebook and Instagram user can earn blue tick. First method is by showing to Meta in a legitimate way that you are notable enough (Through news articles about you, verified profiles on music streaming platforms), while the second method includes the paid process called "Meta Verified." 

If you are a music artist already verified on multiple music platforms like Spotify, Deezer, Apple Music, etc, Moreover, you have received mentions in news, you can apply to be verified on Instagram through the in-app feature. 

Not popular but want to show your friends that you got blue tick? If yes, you can subscribe to Meta Verified by paying a small monthly subscription fee.