It was released as the fourth single from PartyNextDoor's third studio album Partymobile on March 27, 2020, and was produced by Bizness Boi, Cardiak and Ninetyfour.

[4] American record producer Cardiak created the instrumental of the song, which features "intertwining guitar and [a] pitched-up vocal sample".

He then sent it to his co-producer Bizness Boi, who was at a writing camp in Paris; despite working on the track with an unnamed artist, he passed it on to Ninetyfour, who fleshed the song out and sent it to PartyNextDoor upon the advice of a friend.

[5] "Believe It" is a "sensual" R&B "slow burner" about a relationship, with PartyNextDoor and Rihanna singing to each other as lovers "imploring each other to believe in the power of their connection".

[6] Jessica McKinney of Complex included the song among their list of Best New Music of the week, calling it a "breezy R&B record" and noting how Rihanna takes a backseat to Party, "only offering raspy vocals on the chorus", singing, "Best make me believe it/Believe you won't deceive me".