What does the number next to the Stockfish build mean?

Hi, what does the number next to the build name mean when displaying the best move? After calculating a move, below the suggested move it shows the build (stockfish 10) and a number next to it (ie. -2.12) What does that’s number mean? Thanks

They’re centipawn value.

A positive cp value means white has the advantage, While a negative cp value means black has the advantage.