odoo16/addons/portal_rating/views/rating_rating_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <record id="rating_rating_view_form" model="ir.ui.view">
        <field name="name">rating.rating.view.form</field>
        <field name="model">rating.rating</field>
        <field name="inherit_id" ref="rating.rating_rating_view_form"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='rating_text']" position="after">
                <field name="publisher_comment" string="Comment"/>
            </xpath>
        </field>
    </record>
</odoo>