Toppo is a pretty strong fighter but I definitely wouldn’t take him over the legendary Son Goku. Goku has always been known as one of the strongest fighters in all of media. While he has temporarily been surpassed at times, he always trains and gets right back on the saddle. Goku can quickly use his Super Saiyan 4 or Ultra Instinct forms to quickly take Toppa down for the count. Goku wins.