Classic Commerce can be used in different languages. You will need to download the appropriate language pack (containing one .mo and one .po file). These files should be uploaded to the wp-content > languages folder on your website.
Language files can be downloaded here:
- Português do Brasil
For a more detailed explanation refer to this tutorial: How to use Classic Commerce in a different language
NOTE: The language above are based on the corresponding WooCommerce language files and some Classic Commerce translations may be missing or incorrect. To report any omissions, or for any other questions, support requests or general discussions please use the ClassicPress community support forum linked below.