If the one user has an Microsoft 365 License with Microsoft 365 Apps included you can install just that and let him activate the license with his Microsoft 365 account. It is supported on server 2022 according too the documentation: https://learn.microsoft.com/en-us/deployoffice/endofsupport/windows-server-support
You can also license the Microsoft 365 Apps separately for a user if you don't need Microsoft 365 services. https://www.microsoft.com/en-us/microsoft-365/enterprise/microsoft-365-apps-for-enterprise-product?msockid=3fae50b0c57962241aed44fac43163e5&activetab=pivot:overviewtab