Problem with Channel Subscriber Check

But no one has write in the Channel. Example: User X is in the list and subscriber but doesnt write in the chat every time. This tools get the Subscriber status. So how can read chat badges from this user without chatting?

But when i access my app the scopes, the accessToken is only for my user_id.
How can i get other user_id accessToken or what ever for a API Call like

https://api.twitch.tv/helix/subscriptions/user?broadcaster_id=[the_id_from_a_streamer_where_i_normal_user]&user_id=[the_id_from_a_other_user_without_a_accessToken]