Cracked screen
My wife’s iPhone 8 Plus screen is cracked. How much is it to replace? I think she has apple care
Question marked as
See this link --> iPhone Screen Repair & Replacement - Official Apple Support
To know if she does have a valid AppleCare+ Plan, go to Settings > General > About and any valid AppleCare+ plan will be listed. If you don't see one, she doesn't have one.