"If you want something from an audience, you give blood to their fantasies. It's the ultimate hustle"

In this quote, Marlon Brando is suggesting that in order to record the attention and desire of an audience, one must be willing to compromise and put in a lot of effort. He compares this process to offering blood, which is a physically and mentally taxing act. By "blood," he means providing a piece of oneself, whether it be through an efficiency, a story, or any other form of art. This is what he refers to as the "ultimate hustle," as it needs a lot of skill and decision to successfully attract an audience's fantasies and desires. Basically, Brando is emphasizing the importance of putting in hard work and commitment in order to captivate and amuse an audience.