How do you get jabba the hut in Lego Star Wars 2?

You can't actually get Jabba the Hutt as a playable character in Lego Star Wars 2: The Original Trilogy. He is only featured as a boss character in the game.

However, you can unlock Jabba's Palace as a level to play through. This happens after you complete the "Return of the Jedi" storyline and collect all 10 gold bricks.

While you can't directly control Jabba, you can interact with him in his palace and use his features like the Rancor pit or the skiff.

So, while you can't play as Jabba, you can certainly experience his iconic palace and enjoy the game in a unique way.