How do I get data from push key firebase realtime database which was created using javascript

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Javascript

I want to get points of respectived logged in user to be displayed from database corresponding to its push key i tried many ways but i just couldn't make it possible here is my code

const autoid=firebase.database().ref("user").push().key;


    firebase.database().ref("/").child(autoid).set({
    email :email,
    password : password, 
    points :"500", 
    Id:autoid 
   })

Here is the image of my database

What I have tried:

var query = firebase.database().ref().child("/");
query.once("value") .then(function(snapshot) {
      var email = snapshot.val().Email;
      var point = snapshot.val().Points;
 document.getElementById("points").innerHTML=point;
});