Default email template for quote requests can be customised for some fields from WooCommerce > Settings > Emails. After clicking on the tab Emails, click on the dedicated section “Email to request a quote”.
Template can be edited and you can do that using two tools directly available in option panel.
By clicking on “Copy file to theme” button, a copy of the file will be generated instantly within your theme (in the specified path) and you can change this file as you prefer. At the same time, by clicking on “Delete file”, you can delete this copy of the file. If you click on “View”, a textarea will be opened, which contains the file with the template: by so doing you edit the plugin original file directly from the panel.