WoT is an equation you run to give a score between 0 to 100 to anyone else on Nostr based on your follow lists and interactions. The scores are different for every logged-in account. To me, you are a 94, for instance. Even though I don't follow you, many of my followers do and that increases the number.

Currently, we are using NIP-85, which allows users to pick a score provider and that will be shown on Amethyst.