How do I add a hyperlink to text in Pages using iOS version

1. Tap an object, text box, or text you want to turn into a link, then tap Link.
2. Tap Link To and choose a link type (Webpage, Email, Phone Number, Page, or Bookmark).
3. Specify details for the destination such as a website or email.
4. To verify the destination, tap Back, then tap the button for Open Link, Compose Email, Call, Go to Page, or Go to Bookmark.
5. If you don’t need to verify the link, tap the document to close the controls.Linked text is underlined, and a link button (it looks like a curved arrow) appears next to objects that are linked.

Link to a webpage, email, phone number, or page in Pages on iPad - Apple Support

You should share the operating system you are on as the link to text approach is different between iOS/iPadOS, iCloud, and macOS versions of Pages. That information is important if you want help here.

If you are using iOS 16 or 17, you can update to Pages v13.2 from the App Store and follow Libby101a's advice.

I have 13.1 and all the Add Link options are grayed out. Any ideas?

I just created a link in Gmail and copied it to my Pages doc. That worked.