>>96074524
There is no final goal for the Worm Gods. Their very nature is self destructive as a matter of course because of that's what they are and that's how they practice Sword Logic.

Savathun got the Queen of the Awoken to help her remove her worm after she held the Warlock Osiris' body hostage after possessing him when he lost his ghost and pretended to be him. It was a calculated gamble that she won.

The worms themselves are probably located in the chest area and the very nature of the kril changed when they became hive. They don't technically have to eat and they are functionally immortal unless killed with many having been alive for billions of years since they became Hive along with the Hive gods