A good engagement rate for GA4 can vary depending on the industry and type of website. However, a general benchmark for a good engagement rate is around 3-5%. This means that approximately 3-5% of the total visitors to your website are actively engaging with your content. It is important to note that engagement rate can be influenced by various factors, such as the quality of your content, user experience, and the audience you are targeting. It is always a good idea to compare your engagement rate with industry averages and set specific goals based on your own performance. Monitoring and analyzing your engagement rate can help you identify areas that need improvement and formulate effective strategies to increase user engagement on your website.