How do I find password for my wi-fi

See -> Recommended settings for Wi-Fi routers and access points

Recommended settings for Wi-Fi routers and access points - Apple Support

The Wi-Fi network name, or SSID (service set identifier), is the name your network.

And every Wi-Fi network name has a Password.

So sign in in the router and check.

If you need help with your Wi‑Fi password

If you need help with your Wi‑Fi password - Apple Support

(on iPhone with iOS 16.0.3 and later) go to -> Settings -> Wi-Fi -> tap i in the circle -> scroll to & tap on Password -> tap Passcode. 

->  Wi-Fi password visible. 

If you're on iOS 16, you can go into Settings - Wi-Fi - tap the "i" Icon next to the network which you want to see the password for. After FaceID authorization you'll be able to see and share the password which you saved already.

Note that you need iOS 16 to be installed on your device in order to use this feature.