No, you don't have to report it if you did not receive it and they did not issue a payment.
While HelenC12 is correct that you do need to report royalties even if you don't get a 1099-MISC, that doesn't apply if you were not paid by the publisher.
That being said, have you contacted the publisher about when you will be paid? If they tried to pay you last year, but the check was returned, you would need to report it in 2021.
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