What Duolingo score do you need for Utah State University?

Both pages ask you to have the testing agency send official scores to Utah State University. The graduate page says the Office of Global Engagement and the graduate admissions team can access scores from there.

Undergraduate scores more than two years old at the time the application is complete are not accepted. The graduate page also says scores more than two years old are not accepted.

For comparison, the same pages set IELTS Academic at 6.0 with 5.0 in each subscale for undergraduates and 6.5 with 5.0 in each subscale for graduate study.

Undergraduates can also meet the requirement with three years of secondary education in English, an SAT Evidence-Based Reading and Writing score of 500, an ACT English score of 18, or at least 24 credits of US college coursework taught in English, excluding ESL courses. Graduate applicants can use an approved country list or an official language of instruction letter from their previous institution.

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