Hi
My name is Lee; an Independent Consultant, I'm here to help you with your problem.
Open the Settings App
Go to Network and Internet
On the left click Mobile Hotspot
On the right, you will find that password - you can also set a new password on that settings page
Thanks
Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.
______________________________________________
Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.