for information from Microsoft on this product click here
This products includes a license for up to 16 total processor cores. If your processor(s) have more than 16 cores you will need to buy additional 16-core licenses until you have enough licenses for the total number of processor cores your system has.
Microsofts Server 2022 licensing guide is here
This guide also covers downgrade rights. Downgrade rights permits you a licnese to install an earlier version of Windows server of the same type (essentials, standard or datacentre) using the server 2022 license.