Here's what I see, but I'm not a VMware licensing specialist (for that you need to contact VMware sales)...
According to the VMware product guide https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/product/vmware-product-guide.pdf
A Fusion Pro license also allows you to use the license for VMware Workstation Pro. If using it for commercial purposes, you can only use the license on one computer at a time (which means that you'd have to stop using the license for Fusion on the Mac if you wanted to use it for Workstation). If you're using Fusion for non-commercial purposes, you can use the license on up to 3 computers that you own (which seems to imply that you could use them for Workstation Pro as well).
- Paul (Technogeezer)
Editor of the Unofficial Fusion Companion Guides