This is the ISO for Windows 10 20H2. It is the 64-bit edition and the Home Edition. Once installed, it can be upgraded to Windows 11 on systems that meet the Windows 11 minimum requirements.
A product key is not included, and anyone who posts a link to one in the comments is trying to scam you and/or give you malware. If you want to get a product key for a reasonable price (AKA not over $100, like Microsoft likes to charge) I would recommend using the following website: https://www.kinguin.net/