How to monetize my Instagram following? (1M+)

Hello Everyone,
I have been creating theme pages for a while now and usually grow them to sell eventually. However, just over a year ago I created a sports/motivation edit account that somehow amassed over 1M on IG 700K on TT and 60K on YT. On top of this following I have gained some big celebrity followers like Conor Mcgregor, and a few others. Currenlty this page is making next to nothing in revenue (I haven’t been advertising). P.S. I started a clothing brand from it but with very little to no advertising only around 1 sale per week. What would be the best method to make money on an account like this? And How much would an account like this be worth? And should I go all in on the clothing brand?

Thanks in advance for help and advice.