Hi @Qossai Keewan, thank you for reaching out about this!
Reviews/Ratings can take up to 48 hours to get updated on the course landing page. If this time has passed and the reviews are still not appearing, please reach out to our team at firstname.lastname@example.org.
Udemy reviews are evaluated before they are published via our review filter. This process evaluates multiple data points and determines whether the review appears trustworthy. If the system is unable to verify the trustworthiness of the review, the review will not appear on the marketplace. In order to keep the algorithm strong and protect it against gaming, we cannot disclose the exact details of the filter. However, our team will be happy to take a closer look for you!