I thought that the VBscript engine, accessible from cscript.exe, also has a builtin JavaScript frontend. The idea being that both of these are a scripting language that can interact with COM objects. No idea if the various embeddings of VBScript such as excel or ASP can use js out of the box though.
I believe you're thinking of JScript, they're not quite the same thing.
As the sibling comment notes, VBScript isn't JScript, though both are executed by the Windows Script Host (wscript/cscript). JScript had already been deprecated in 2009 with IE 8.
VBScript is deprecated since 2023 and in the process of being removed: https://techcommunity.microsoft.com/blog/windows-itpro-blog/...
You also cannot run VBScript (nor JScript) from VB or VBA, other than invoking it as a separate process. VBA is not an "embedding of VBScript". VB/VBA are compiled to an intermediate representation called P-code, they aren't scripts in the sense of being executed from a textual representation like VBScript/JScript.