"Per 5 anni" is like "during 5 years"; "Da 5 anni" is like "since 5 years": for example: "I started to sudy italian 5 years ago"

Per 5 anni = Ho studiato inglese per 5 anni (from 2013 to 2018) I have studied English for 5 years You are probably not studying anymore ____________ Studio Inglese DA 5 anni = I have been studying English for 5 years and you're probably still studying