Welcome to Apple Support Communities Tigermom1234,
We'd be happy to provide some information regarding guided access. In order to end it, you can triple slide the side or home button, enter your passcode than tap end or use Touch ID/Face ID by double-clicking the Side or home button.
If the password is unknown or forgotten and you have a passcode set on your iPhone, you can force your iPhone to restart and then enter your device password.
Use Guided Access with iPhone, iPad, and iPod touch
Force restart iPhone
Have a good one!