The name attribute specifies the name of an <input> element. It is used to reference elements in a JavaScript, or to reference form data after a form is submitted to the server.

Only form elements with a name attribute will have their values passed when submitting a form.

<form action="http://localhost" method="POST">
    <label for="User">User name</label>
    <input type="text" id="User" name="Name" value="bino" />
    <input type="submit" value="submit" />
</form

When you submit the above, server localhost will recive a content like below:

Name=bino

References

w3schools

To read and write without authenticaton in firebase, you need to updated the rules in the database as below.

{
  "rules": {
    ".read": true,
    ".write": true
  }
}

Please note that this allow anyone to fetch and write the data to the database.