Deadline for eBay to release them is Jan 31. They will be posted on your payments section here:
https://www.ebay.com/sh/fin/taxforms
Edit to add helpful info about eBay 1099-Ks:
https://www.ebay.com/help/selling/fees-credits-invoices/ebay-form-1099k?id=4794
You can go to this page and generate the CSV report and you'll see what's counted on your 1099 at the transaction level. https://www.ebay.com/sh/fin/taxdetails
"Your 1099-K Details report shows all the orders that factored into your gross amount of payments. The report also provides other details, such as transaction fees, which may be relevant when preparing your taxes."
There's also a guide published here where you can further drill down and get reports for expenses and refunds: https://www.ebay.com/mes/taxguide?sh=true