Hi waditz
Welcome to Apple Support Communities. I understand you're seeing a monthly review of the Screen Time usage with small green circles.
Screen Time is a great feature to monitor the usage of your daily activities. I'll be happy to help.
With Screen Time you can view the usage of your device, apps and how many times a device was picked up or received a notification. The options that appear are for, week's and day. That information is outlined in this article: Use Screen Time on your iPhone, iPad, or iPod touch
You mentioned seeing small green circles with the monthly usage for Screen Time. Can you tell us the steps of where you're seeing this information on your device? That way we can gain a better understanding to provide you the best support.
Kind regards.