Anyone who has seen “Bottoms” or “Shiva Baby” knows Rachel Sennott is irreverent, witty, and laugh-out-loud funny. And thanks to HBO, she’ll soon be front and center on her own series.

That’s largely what they got. The movie stars Rachel Sennott (“Bodies, Bodies, Bodies”) and Ayo Edebiri (“The Bear”) as high schoolers who decide to form a girls’ fight club ...