What happens if i delete my apple ID?
Mt apple phone have been lost .. i am asking What will happen
if i delete my apple ID from icloud website
See the following from the "Erase your device" section of If your iPhone, iPad, or iPod touch is lost or stolen - Apple Support
If you remove the device from your account after you erase it, Activation Lock will be turned off. This allows another person to turn on and use your device.