So Much Fun received generally positive reviews and debuted atop the US Billboard 200, becoming Young Thug's first US number-one album.

[6] The deluxe edition of the album was released on December 20, 2019, featuring five new tracks: "Diamonds", "Hop Off a Jet", "Die Today", "Millions", and the remix of "Hot".

He might not mystify as he did in the early stages of his career, when he was stumbling into new flows and deliveries at an inhuman pace, but now he's able to wield the madness with ease, satisfying in many modes".

said, "Although it may not be the best project that Young Thug has released, certain tracks off So Much Fun are guaranteed to become classic party anthems played at max volume for years".

So Much Fun is somewhere in the middle, with a handful of legitimately great songs, only a couple you may end up skipping, and none that sound like someone forgot to send them to the mastering engineer".

[25] Rolling Stone's critic Danny Schwartz said, "So Much Fun doesn't mark a step forward for his aesthetic, but rather an attempt to refine it".

[22] In a mixed review, RapReviews's Steve "Flash" Juon stated: "You can't examine Young Thug's music too closely or think about it too carefully if you want to enjoy it, because the casual misogyny of throwing around "Pussy" as an insult reminds you he's not exactly progressive.

If you're looking for bass to shake the concrete and singing so modulated as to nearly be R&B, tracks like "Jumped Out the Window" and "Boy Back" featuring NAV will definitely fit the bill.

"[21] In his "Consumer Guide" column, Robert Christgau said that, "In alphabetical order, it's alienated, all-embracing, catchy, complacent, crass, dirty, dissolute, facile, fucked up, funny, hedonistic, insular, licentious, light-hearted, materialistic, mumbly, rich, scared, sexist, 'trap', unpretentious, woozy, and wrong.