If you have a 5-digit PIN, it's likely NOT an Identity Protection PIN (IP PIN). Instead, it's probably your prior year PIN used to e-file your 2024 return.
If you're looking to enter or edit your 5-digit prior year PIN, you'll do this on a different screen by following these instructions.
If you only have a 5-digit PIN, you likely don't need to enter an Identity Protection PIN (IP PIN) here. Answer No to the question asking if you have an IP PIN.