How to change “*indicates required fields” legend

You can easily change the Gravity Forms required legend with a function in your plugin or function file:

<?php
add_filter( 'gform_required_legend', function( $legend, $form ) {
  return 'Required fields';
}, 10, 2 );
?>

And with WPML string translation :

<?php
add_filter( 'gform_required_legend', function( $legend, $form ) {
  return __( 'Required fields', 'wpster' );
}, 10, 2 );
?>