What Duolingo score do you need for the University of South Florida?

Test scores must have been earned within two years of your intended term of entry. Applications with English proficiency scores that do not meet the minimum will be denied. You must meet the requirement if your country's official language is not English, and USF links a list of English-speaking countries.

IELTS comparison: the same page asks for IELTS 6.5 or higher.

The page says the requirement may be waived if you meet another proof of English proficiency, such as alternatives in the USF academic catalog or certain completed coursework at the University's discretion. It does not offer a conditional Duolingo range.

Requirements vary by programme and change between admissions cycles. The score that binds you is the one on your USF programme page and in your offer letter, so check it there before you book a test.