And he defeated one of them ofc, a former Yonko. Sure it was a joint effort but still.
Defeated a great pirate and became one himself, equal in bounty to a certain new yonko and 2nd coming/resurrection of joyboy and nika the sun god.
Kidd, Law and Luffy all got 3 billion bounties post Wano, Luffy was declared a Yonko officially and not just a "5th Emperor" and who faced Shanks in Luffy's place? Kidd. Kidd became a "great pirate" and thus got brutally tested by Shanks (vomits from the terrible writing).
During the game those 3 played to determine who goes where after Wano, Luffy was meant to go to Elbaph instead of Kidd and Kidd was meant to go to Egghead IIRC. I remember Luffy and Kidd chose the same direction or something and it ended up with Kidd going to Elbaph and Luffy to Egghead ofc, so Luffy gets to duck Blackbeard jumping him but also reuniting with Shanks conveniently, Kidd doesn't get to meet Vegapunk and he also avoids getting fucked over by Blackbeard instead ironically or even potentially allying with him instead. But I don't think Kidd would have allied with him there and then unless they happened to discuss Shanks somehow.