Forgetting the password to your LG V30 can be a stressful experience, but there are a few ways to unlock it without the password. Here are some methods you can try:

1. Use Google Account: If you have linked a Google account to your LG V30, you can use that account to unlock the phone. Enter the wrong password multiple times until you see the option to unlock using your Google account credentials.
2. Android Device Manager: Another option is to use the Android Device Manager website. Log in with the Google account associated with your LG V30, select your device, and choose the 'Lock' option to set a new password.
3. Factory Reset: A last resort option is to perform a factory reset on your LG V30. Keep in mind that this will erase all data on the device, so make sure to back up your important files before proceeding.

It's essential to remember your password or set up alternative unlock methods to avoid being locked out of your device. If you continue to have trouble accessing your LG V30, consider contacting LG customer support for further assistance.