To take credit means to accept honor for an achievement. The implication is that the honor is not deserved. Someone might take credit for inventing something.
Person A: Yo bro, thanks for turning the bully down.
Person B: It's okay bruv, not a big deal.
Person A: You probably should take credit for doing that.
Person B: It's okay bruv, not a big deal.
Person A: You probably should take credit for doing that.
by Negligible Dude May 13, 2021