Delivery App - Retrieving Order

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Hello, what you want to do at this time would not know how, because when you send the order you only fill one row of data and you have the orders in different rows.
If it serves you and your intention is to relate the ordered items, it can do something like this.

On the sheet where the articles are, enter an email & restaurant column and another email & restaurant & count column.
That count would be comparing the electronic & restaurant column with a similar column in that final “Order” table. It can also be done by relating, there are several ways. Then it increases from 1.
When ordering an item, together send those 2 columns to the cart (the user does not need to see them, hidden). And then from the cart when you send the order to that “Order” sheet, incorporate those 2 columns.
The email & restaurant column will help you count.
The email & restaurant & count column helps you link items to the final order.
I hope it is understood.
Jeff_Hager is the one who helped me.