I need to make a report that show the total limit credit for each country. I have to show information in two ways: using a tree view and using a graphic view. 

Can I do it using "Technical>User Interface>Customized views " or I have to install a new Odoo app? Can you send me a link to a video tutorial or blog article that show how to make it?

I am using Odoo 13 and Windows 10.

Thank you so much!