Where can I see the Summary of my Deal?

You can see the Summary of your deal in the Summary View of a Deal record in the Deals module.
Here you can see the following:

• Key fields information.
• Related module tabs.
• Journey Tasks from Playbooks and actions created from the Process Designer.
• Activity section:
  • Updates
  • Touchpoints
  • Comments made by other CRM users
• One View Widget: Shares the 360-degree view of your deal.