There is AppSource Video attached how to package AppSource (D365 solution).
These publishing resources may also be helpful:
Create packages for the Dynamics 365 Package Deployer | Microsoft Docs
Create packages for the Dynamics 365 Package Deployer
Please follow the steps (probably within a hour max) and move forward with publish.
We have a video of the steps and documentation for the reference.
https://docs.microsoft.com/en-us/powerapps/developer/data-platform/webapi/overview
https://partner.microsoft.com/en-US/membership/co-sell-with-microsoft
Blog on custom connector (ISV CE offer, Connector Market place)
Get ISV D365 License
See this link: [ISV] Request License (dynamics.com)
To request product skus Discounted SKUs.pdf (windows.net)
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