Google is quite sophisticated in understanding abbreviations and their full forms. For example, if you're searching for something related to "Virtual Reality," using the term "VR," Google will recognise this.

However, it's always a good idea to use the full form in your website content to ensure clarity. In terms of SEO, both versions can work effectively as long as the rest of your SEO strategy is robust, including keyword optimization, quality content, and a good backlink profile.