There are many WordPress plugins that are designed specifically to help you with Google site verification. However, you don’t need to use them because you’ll likely need to verify ownership on other webmaster tools and platforms like Bing, Yandex, Pinterest, etc.
It’s much better to use the All in One SEO plugin because it lets you add site verification for all platforms (in a single plugin). Not to mention, it also has a ton of other WordPress SEO features to help you rank better and get more traffic.