If you aren't in one of the small number of supported regions, you can't see this information. In Hong Kong, we just see a page that says "Google One is coming

If you aren't in one of the small number of supported regions, you can't see this information. In Hong Kong, we just see a page that says "Google One is coming soon. Expanded storage, access to Google experts and more – in one shareable plan. Be among the first to know when Google One is available in your area."