That night, Sheldon finds George in the garage. Using his detective work, Sheldon has cornered the grill thief: the neighbor’s dog dragged it into the bushes. They roll the rusted grill back into the yard. George lights a match. "One more thing, son. You ever tell your mother we drove five hundred miles to watch a rocket not launch, I’ll tell her about the 'medium-rare hamburger' you ordered with your allowance."
It sounds like you're looking for a plot summary or a story description for Young Sheldon Season 1, Episode 8, titled young sheldon s01e08 720p web h264
Sheldon, using his logic like a crowbar, bargains with his father. If George drives him to see the next shuttle launch (STS-26, the first after the Challenger disaster), Sheldon will help him find the grill. He deduces the thief is likely a disgruntled rival coach or a neighbor who hates the smell of brisket. George rolls his eyes but agrees. That night, Sheldon finds George in the garage
For Sheldon, the shuttle isn't just a machine; it's a geometric miracle of reusable stages and Newtonian physics. He announces to his mother, Mary, that he must see a launch in person before he dies. Mary, thinking this is a phase like his theremin phase, agrees... as long as his father, George, takes him. George lights a match