Hi,

Try the following code in the layout template.

<div class="col-4 text-center" style="font-size: 10px;">

    <span>Page </span>

    <span class="page"/>/<span class="topage"/>

</div>

Reference:-

* https://www.cybrosys.com/blog/how-to-customize-header-footer-for-all-reports-in-odoo-17-erp

Hope it helps

file path : odoo/addons/web/views/report_templates.xml

template id = external_layout_striped

in you custom template

or 

you can add in your template footer example

    
        
            
                /