It's like when you gotta go for something or just go to work to get the money you say that.
You can also say ''Get this bread''.

When you promise your friends that we’re going to get a #victoryroyal In fortnite or any battle royal game.

A phrase commonly used when team Kinderschoko esports were playing their debut tournament with immediate success.

A term used whenever you are determined to achieve something in a game or accomplish a goal, it can be used in real life also.

let's get this bread refers to making money (because money=dough and dough=bread)