Hello crowslivebig! 👋
Welcome to 1Password! If you were using iCloud Keychain before moving to 1Password then, if you have a Mac handy, you can import all of your passwords into 1Password by using Safari on your Mac: Move your iCloud Passwords from Safari to 1Password
There isn't a way to automatically export passwords from iCloud Keychain and import them into 1Password on the iPhone or iPad. You can instead import up this data through a 'passive' import. On an iPhone/iPad, this entails running both Keychain and 1Password simultaneously in Safari, having Keychain enter your login credentials into a site, and then using the 1Password extension to save the filled website entry. Here's an article about saving, filling, and changing passwords using 1Password for Safari on iOS: Get to know 1Password for Safari on your iPhone or iPad
You can also copy a password (or username) from Settings > Passwords. Then, you can create a new login item in 1Password and paste it there: Get to know 1Password for iOS
I hope that helps! 🙂
-Dave