For the pork shoulder: Season pork with salt and pepper.
Set Instant Pot to Sauté. When setting reads HOT, add oil.
Add pork and brown on all sides, about 3 minutes per side.
Cancel Sauté setting.
Add vegetable broth, close lid with pressure vent closed and set Instant Pot to Meat/Stew. Let cook 60 minutes, then allow pressure to release naturally.
Open lid, remove pork to bowl and shred with two forks.
To serve: Pulled pork can be used on sandwiches, salads, pasta, etc.