Firebase analytics - how to see all the users properties in an event detail view

You can do it in BigQuery or creating app+web property in Google Analytics and connect it with Firebase.

You can not filter by user properties. Click on events, select the event you are interested in, and then add a filter and press apply.

See this for further details on the following code:

import FirebaseAuth
func userProperties(){
    let user = Auth.auth().currentUser
    if let user = user {
        // The user's ID, unique to the Firebase project.
        // Do NOT use this value to authenticate with your backend server,
        // if you have one. Use getTokenWithCompletion:completion: instead.
        let uid = user.uid
        let email = user.email
        let photoURL = user.photoURL
        var multiFactorString = "MultiFactor: "
        for info in user.multiFactor.enrolledFactors {
            multiFactorString += info.displayName ?? "[DispayName]"
            multiFactorString += " "
        }
        // ...
    }
}