All JBLD plug-ins are platform as well as version independent. You may use your license with any version of Vectorworks from the minimal supported version up.
They are, however, linked to a specific seat of Vectorworks, meaning you may use them with a specific Vectorworks serial number and its subsequent upgrades.
Savvy Series licenses are linked to a specific version of Vectorworks. For example, if you have the 2020 Savvy Subscription Series, it will work in perpetuity with Vectorworks 2020.