1) How to create a model-driven app dashboard and data will be the same page?
I am not sure I understand your question.
For Model-Driven App creation, see the get started guide below:
Overview of building a model-driven app
Dashboard would be on the same page with the form and the Views created, there would be tab option available for you to choose whether you would like to see a dashboard or a View:
Hope the information above clears your question.
how can I see data and dashboard and chirt in the same page using of my own entities?
The time has come: We are finally able to share more details on the brand-new ranks coming to the Power Apps Community!
Features releasing from April 2020 through September 2020