Hi @tukurukuinamdapiaati,
To show data coming from the user profile in Blazor, you don’t need to access the ID token (JWT). The token claims are mapped to the AuthenticationState. Take a look here to get an idea of how you can access the AuthenticationState (the article is for Blazor Server, but it’s similar in Blazor WASM)
Regarding user metadata access, it would be helpful to learn how you try to get metadata and what type of error you get.
Anyway, be aware that accessing user metadata from a SPA, like a Blazor WASM app, has limitations. Learn more here.
Also, this question in the community forum may give you a hint