Where do I start

I have a bit of a back story but really it's all about respect at this point.

My S.O. have been together 9.5 years and have a 2.5yr old and I have nothing and he has it all.
Idek where to start to begin a new life with my daughter.
It all needs to be done without home knowing and I’ve googled until I can’t anymore.
Idk what to do or where to start bit the disrespect ends when 2022 begins. My daughter deserves a happy mom. Shit, a happy dad too.
I need help.
He’s been my best friend for almost 10 years… Advice? We’re in Arkansas.