Q: Cannot unlock screen

Hello Maricarlciste14,

If your touch screen is still not responding, I would recommend you do these steps from the following article:

If the screen on your iPhone, iPad, or iPod touch doesn't respond to touch

1. If you have a case or screen protector on your device, try removing it.
2. Clean the screen with a soft, slightly damp, lint-free cloth.

I know it's not much, but if the Home button is not working then there is not much else to do but wait until the device loses power to be able to turn it back on and hopefully the screen will start responding again. 

You may also want to take a look at the troubleshooting the Home button with this article:

Get help with buttons and switches on your iPhone, iPad, or iPod touch

Also if you want to seek service or consider your options for service have a look at this website:

iPhone Repair and Service

Thank you for using Apple Support Communities.

Thank you for using Apple Support Communities.