onequizperday.php

<?php

add_action( 'forminator_quizzes_submit_before_set_fields', function($entry){
    $entry->set_fields(
        array(
            array(
                'name'  => '_forminator_user_ip',
                'value' => Forminator_Geo::get_user_ip(),
            )
        )
    );
});

add_action(    'forminator_before_submit_quizzes',    function( $form_model ) {
        $form_id = $form_model->id;
        $form_ids = array( 536, 74, 20 ); // IDs of the Quizes for disabling submission

        if ( in_array( intval( $form_id ), $form_ids, true ) ) {

            $user_ip = Forminator_Geo::get_user_ip();

            if ( ! empty( $user_ip ) ) {
                $last_entry = Forminator_Form_Entry_Model::get_last_entry_by_ip_and_form( $form_id, $user_ip );

                if ( ! empty( $last_entry ) ) {
                    $entry        = Forminator_API::get_entry( $form_id, $last_entry );
                    $current_time = strtotime( date( 'Y-m-d H:i:s' ) );
                    $future_time  = strtotime( '+1 day', strtotime( $entry->date_created_sql ) );

                    if ( $current_time < $future_time ) {
                         wp_send_json_success(
				            array(
				                'result'     => 'You cannot submit this quiz within 24 hours after submitting once!',
				                'result_url' => '',
				                'type'       => 'nowrong',
				            )
				        );
                    }
                }
            }

        }

    },
    15
);