Hi Barry,
I am Dave, an Independent Advisor, I will help you with this.
1
Do you mean the WiFi password on your Router, if so, that should be printed on a sticker on the bottom or back of the router.
2
Another method is to find that is as follows:
Open File Explorer.
In the Address Bar, paste this and press Enter:
Control Panel\All Control Panel Items\Network and Sharing Center
Click your current Network at the top if the resulting Control Panel page.
Go to Wireless Properties - Security - Show characters.
3
Or if you are trying to connect the phone to a WiFi Hotspot you have created in your PC:
Open the Settings App, go to Network and Security - Wireless Hotspot and there you will see the password.