In your situation, I think you meant to say takeout. You can say, "I'm going to get some takeout from [restaurant name]." Alternatively, you can say, "I'm going to get some food to go from [restaurant name]." "Takeout" and "to go" means you go to the restaurant to pick up the food yourself. "Delivery" means you call from your home and the restaurant delivers the food to you. For example, "Chinese takeout" and "Chinese delivery;" "pizza takeout" and "pizza delivery." When you go to a restaurant that takes your order at the counter, the server will ask you, "for here or to go?" If you eat at a sit-down restaurant and can't finish your meal, you can ask the waiter for a "to-go box" (some people say "doggy bag") or you can just point to your leftover and ask the waiter, "can I get this to go, please?" This may be more information than you're looking for. My answer is the common usage in the US; it may defer from country to country.

You'll get some foods to go at a restaurant. "Hey, Ms. I'll go with a Cake to go". "Please, a coke to go". Delivery is a system where the restaurant brings you the food. It takes the good to your home. Hope to be of help.

You'll get some foods to go at a restaurant. "Hey, Ms. I'll go with a Cake to go". "Please, a coke to go". Delivery is a system where the restaurant brings you the food. It takes the good to your home. Hope to be of help.