The term "v2020 iso" does not refer to an official Microsoft release, as Office 2013 was originally released in late 2012. Such files are often found on third-party sites and carry significant risks:
Microsoft no longer provides new security updates or technical support for this version, which may expose users to security risks. Download Microsoft Office 2013x64 v2020 iso
Legitimate re-installation of Office 2013 is typically done through your Microsoft Account Services & Subscriptions page. The term "v2020 iso" does not refer to