You can follow these quick steps to copy Page between Sites
#1. First, install this tool.
#2. Next, open both sites > Click tool icon on browser > Click Enable extension

#3. Hover on a Page > You will see this icon

#4. Click Get Collection Data

#5. Wait a moment and you will see this message

#6. Open destination site > Click tool icon > Click Create from Data

#7. Confirm

#8. Wait a moment

#9. You can repeat similar if you want to copy Collection Pages (Blog, Event, Product…)