I created a food ordering chatbot but I need the restaurant to know when someone placed an order

To accomplish something like this you'd need to create an HTTP API on your side that gets called by your bot and takes care of sending the email.

First things first. 1. What placed and order mean? Did you provide a link to booking system via botpress chat ? 2. If there is no booking system, then the fastest way to build on will be to use series of prompts, which pack order data into one object and then send it to a workflow in service like n8n or Zapier, which will put the order in a system, lets say google sheets and then dispatch a notification