What Duolingo score do you need for National College of Ireland?

Your English certificate must be issued within two years of the expected start date. NCI says its requirements are subject to change from intake to intake.

For comparison, the same page asks for IELTS Academic 6.0 with no less than 5.5 in each skill where Duolingo is 105, and 6.5 with no less than 6.0 where Duolingo is 120.

Students taught and examined through English for a full degree in Ireland, the UK, the US, Canada, Singapore, Australia, New Zealand, Ghana, Nigeria or South Africa are exempt from NCI's English requirement, though they may still be asked for a recognised test.

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