Can You Make a Camp in Red Dead Online on Xbox 360? No—Here's Why
You cannot make a camp in Red Dead Online on Xbox 360 because Red Dead Online was never released on Xbox 360.
Why
Red Dead Redemption (2010) on Xbox 360/PS3 is a single-player game only.
Red Dead Online launched in November 2018—years after the Xbox 360's lifecycle ended—as the multiplayer component of Red Dead Redemption 2 (PS4, Xbox One, later PC).
Camp creation (wilderness camps, persistent posse camps) is a core Red Dead Online feature.
To Play Red Dead Online
You need a PlayStation 4, Xbox One, or PC (via Rockstar Games Launcher, Steam, or Epic Games Store).