Microsoft project management software used to plan, manage, and communicate a project schedule and other information among workgroup members, project managers, and other stakeholders.
Dear Amini,
Project for the web is connected to the Microsoft Dataverse connection. You may use the Microsoft Dataverse connector which works with Project schedule APIs to connect Project for the web with PowerApps and Power Automate.
Here are some articles for your reference:
Creating a My Tasks view for Project Power App - Microsoft Community Hub
Use V1 Project schedule APIs with Power Automate | Microsoft Learn
For customizing forms with PowerApps, you can refer to Understand canvas-app forms - Power Apps | Microsoft Learn.
Hope that the information above helps you.
Thank you for your effort and time.
Sincerely
Cliff | Microsoft Community Moderator