While Loaded doesn't have a direct integration with Uber Eats or Doordash, any information that gets passed to your POS will usually also filter through to Loaded. I'd recommend contacting your POS provider to find out how to get Uber Eats set up and filtering through on the tills.
Once that's sorted, depending on the way it's set up on your POS, you'll be able to see this information on Loaded. Usually this tends to be through either a sales tender type or a product group.