Many Catholics believe that it is a sign of respect to kneel before the Pope and kiss his ring, but I beg to differ. The Pope is the head of the Catholic Church, but he is just a man.
Peter was an apostle, but how did he react when Cornelius fell down and worshipped him? We read in Acts 10:25–26:
And it came to pass, that when Peter was come in, Cornelius came to meet him, Cornelius came to meet him, and falling at his feet adored. But Peter lifted him up, saying: Arise, I myself also am a man.
Much has changed since the time of Peter. There are now many man-made doctrines and traditions that deviate from the teachings of Jesus. The Pope does not represent Jesus. There is no need to kneel before him.