Duolingo does not currently offer a PDF of a score certificate. You may either choose to send your certificate to an institution through your homepage via the “Send Results” button, or if you'd just like a copy for your records -- you may choose to take a screenshot of your certificate -- which is available in your results email.
If the institution that you’d like to send your certificate is not listed, please reach out to the institution and ask them to set up an easy-to-use account by emailing firstname.lastname@example.org.
Duolingo will NOT send scores or certificates to institutions via email. Duolingo uses a secure dashboard for your protection.