Hi Wei,
It's not automatically applicable to all scripts. I think the Microdata plugin is primarily designed for a classified ads script "for products and services" datas. However, if your website includes real estate, job, or vehicle listings, it's crucial to review and ensure the correct implementation to avoid potential penalties from search engines like Google. You can verify the correctness of your structured data in Google Search Console or by using the
https://search.google.com/test/rich-results page on a page-by-page basis.
The "Product" schema definition typically relates to both tangible and intangible items that people purchase. You should use the "Product" schema for items such as physical products or digital goods.
In my case, I used the Real Estate Script, which is why I sought assistance to ensure the accuracy of the structured data on my website and I believe that this might be one of the reasons why my website's ranking is underperforming.