No, WPBakery does not offer a free license.
But if you are looking for a free alternative, we recommend giving a try to our new product: download free Visual Composer — a drag and drop WordPress website builder that offers ready-made content elements, templates, and powerful design options.
In addition, if you are in search of a WordPress theme, Visual Composer offers a free Starter theme that perfectly complements the website builder.
Note: WPBakery is not replaceable with the Visual Composer, meaning there is no migration option.