Thanks for posting your question in the Microsoft Q&A forum.
According to OpenAI’s Content Policy, you own the images you create with DALL·E, including the right to reprint, sell, and merchandise – regardless of whether an image was generated through a free or paid credit. Therefore, you can use the images generated by OpenAI DALL·E commercially.
https://help.openai.com/en/articles/6425277-can-i-sell-images-i-create-with-dall-e
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