LEGO Star Wars: The Skywalker Saga - 10Billion stud farm method

Get the “Only One Business in the Galaxy...“ trophy easily.

This trophy is easy no matter what, but this method could get it for you on day 1 of playing if you feel like it. I started from Episode I and have only beaten that and Episode II. I wanted to get the five studs multipliers so that I never have to worry about cash in the game. I was farming the really wrong way because planets are very cheap and mostly only have silver and gold studs.

Here is the method. This might work after episode I but definitely after II. When traveling through space, you may encounter a Trade Federation Battleship - the same model Anakin fights at the end of ep I. Destroy its defenses, board it and take it over. If you do not have the 3M studs necessary to buy it, do not sweat it. 

Now start flying back and forth between the planets you have been to. I would skip Tattooine because it seems to have Imperial craft even though I have not seen the birth of the Empire as yet. You are looking for a Trade Federation Battleship to come out of hyperdrive above the planet. If you bought the ship, you will always see it at the beginning, but that is your ship. You want the one that says "TRADE FEDERATION BATTLESHIP" in red. Attack and destroy it. Regardless of whether you are at studs x1 or x3840, you will get a ridiculous amount of studs for 2 minutes of work. Make sure you also destroy the pieces of the ship after it explodes for more studs. Also make sure you take out the studs comet in the area. A second battleship may show up in orbit. 

This is perfect farming to get you ten billion studs. Just make sure that you have collected five of the Datacards as you will need one each to unlock the studs multipliers, along with the necessary studs.