Hi @josephine thanks for posting in the community! While this information is not available when right-clicking a shape you can check the Size and Position data from the Shape Options menu of the properties bar. 

You can also pin this menu to your canvas by clicking the pin icon in the upper right-hand corner of the menu! For more information on shapes I recommend checking the Modify Format and Style Shapes article from the Help Center. 

Feel free to comment in this thread if you have any additional questions about this or create a new post if you have another topic you'd like to discuss. Hope this helps!