Hello krlun5664,
Thank you for using Apple Support Communities.
We understand that you accidentally deleted the Maps app or it's icon from your iPhone. If the App was deleted, the following excerpt from this article will guide you to restoring the Maps app:
Delete built-in Apple apps from the Home screen on your iOS 14 or iPadOS device or Apple Watch - Apple Support
- On your iOS or iPadOS device, go to the App Store.
- Search for the app. Make sure that you use the exact name of the app. Find the correct name of built-in apps.
- Tap  to restore the app.
- Wait for the app to restore, then open it from your Home screen.
If you have an Apple Watch, restoring an app to your iPhone also restores that app to your Apple Watch."
If you get the option to "Open" and not download, then that indicates the app is still on your iPhone and you just need to locate it. Look for it on the different pages and then look into the various folders for the App icon or use the Search option to locate it
Best regards.