Anyone that knows Graphql, would you be able to help me out?

I’m not familiar with Graphql whatsoever, by doing some research, I was able to perform the following query on an open Graphql endpoint:

{
  __type(name: "User") {
    name
    fields {
      name
      type {
        name
        kind
      }
    }
  }
}

This responded with:

{
  "data": {
    "__type": {
      "name": "User",
      "fields": [
        },
        {
          "name": "firstname",
          "type": {
            "name": "String",
            "kind": "SCALAR"
          }
        },
        {
          "name": "lastname",
          "type": {
            "name": "String",
            "kind": "SCALAR"
          }
        },
        {
          "name": "fullName",
          "type": {
            "name": "String",
            "kind": "SCALAR"
          }
        },
        },
        {
          "name": "title",
          "type": {
            "name": "String",
            "kind": "SCALAR"
          }
        },
        {
          "name": "birthday",
          "type": {
            "name": "DateTime",
            "kind": "SCALAR"
          }
        },
        {
          "name": "nationality",
          "type": {
            "name": "String",
            "kind": "SCALAR"
          }
        }
      ]
    }
  }
}

Is there a way to extract the data from here? I’m basically testing to see if I can extract PII from this open Graphql endpoint. Any help would be greatly appreciated!

Read about GraphQL here https://graphql.org/. You will have the answer once you understand what you are dealing with.