nowadays with the prosperity of the software industry and its spread around the world and the users' dependence on software in various matters of life, it has become imperative to ensure that the user's needs are met and to achieve business value in order to ensure the continuity of the software's use and minimizing the user's resistance to it. The effect of user involvement during the software development cycle using different development methodologies (Traditional Methodology, Agile Methodology) plays an important role in the success of software development & Implementation projects, as it is considered a major process in building software as well as the nature of the project, whether it is built as a product or provided as a service. In this paper we will work on providing new user involvement quality model by exploring activities and attributes which have impacted on user involvement during software development process and specifying quality characteristics, relation and associated metrics for user involvement in Software Development Life Cycle whether it is developed as a product or offered as a service, as well as determine how to measure those characteristics to ensure high quality in user Involvement. And will demonstrate that the quality model provide best practice to ensure high quality user Involvement.