There are a lot of side quests in Hollow Knight: Silksongfrom simple little fetch quests, to ones where you'll hunt down specific enemies. Each one has its own complexity, but the Silver Bells side ...

You can pick up the "Silver Bells" quest from Bellhart's wish board, but only after completing "The Threadspun Town." That means you'll need to defeat Sister Splinter in Shellwood, get the wall cling ...