Oh sure, you got that brief blurb at the end of Deathly Hollows where he’s sending the kid to Hogwart’s, but what REALLY happened to him? I’ve got the scoop!

After Harry graduated, he tried to pursue a boring 9 to 5 job in the mundane world but quickly bored of it. He traveled to Vegas and quickly became THE act to see on the strip with his magic.
Unfortunately, his unbelievable and unequaled act also earned him the jealous wrath of Penn and Teller, and other stage magicians. A vicious smear campaign on social media and elsewhere led to Harry being ran out of town on a rail.
He took the remainder of his savings and settled in small town Tennessee where he opened a couple of gas stations with convenience stores. He’s lived there quietly ever since. His stores are super popular, as they always seem to have everything in stock, and his gas prices have been described as magically, almost unbelievably low. 😉
And now you know the rest of the story