I need help restoring my iPhone 7 Plus

Sorry, but that is just not enough information in order for us to be able to assist you with a potential solution.

• Writing an effective Apple Support Communities question - Apple Support Communities

For example: At what point are you having issues with restoring your iPhone? What have you tried, so far yourself, to resolve this issue?

Ref: If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support