@Adedayo You can start using the Face API with Node JS using this quickstart. You can also explore using different features of the client API from the reference.
Also, linking one of my original post where I detailed how you can use face verify. If you have any issues in using the API please post them in a new thread so the community could chip in to help. Thanks!!
If an answer is helpful, please click on or upvote which might help other community members reading this thread.