am i going to include all 20 questions that i constructed into question design in research methodology

It depends on the specific requirements of your research methodology and the goals of your study. In some cases, including all 20 questions may be appropriate and necessary to gather comprehensive and relevant data. However, in other cases, it might be more effective to focus on a smaller subset of questions that are most important for your research objectives. It is important to carefully evaluate and select the questions that will provide the most valuable insights for your study.