Sometimes after making a purchase from the Origin Store, you may not receive an email containing your Product Code.
Find your code with the following:
- Restart your Origin Client.
- You can close your Client by clicking Origin in the menu bar and selecting Exit. Then open up the client and log-in.
- Open your My Games library and click the Refresh button.
- Right-click your game’s tile and select Show Game Details.
In the game details screen you’ll see your Product Code as well as additional information on your game.
https://help.ea.com/sg/article/how-to-find-your-origin-purchase-s-product-code