As of my last knowledge update in January 2022, the CUET (Central Universities Common Entrance Test) was a proposed common entrance test for admission to various undergraduate programs offered by central universities in India.

Please note that processes and requirements might have changed after that. However, to give you a general idea of how you might fill a form for a common entrance test like CUET:

1. Registration: Visit the official website of CUET or the respective university conducting the test. Look for the application or registration link.

2. Create an Account: Register yourself by providing the required information such as your name, email address, mobile number, and creating a password.

3. Filling the Form: Log in to your account and fill out the application form. You’ll need to enter personal details, academic qualifications, choice of courses/programs, and other necessary information.

4. Uploading Documents: You might be asked to upload certain documents, such as a photograph, signature, educational certificates, and any other documents specified in the instructions.

5. Application Fee: Pay the application fee, which is usually required for successful submission. There might be different modes of payment available (online payment, credit/debit card, net banking, etc.).

6. Review and Submit: Before submitting the form, review all the details to ensure they are accurate. Once you are certain everything is correct, submit the form.

7. Admit Card: After the application process is completed, the university will release admit cards. Download and print your admit card for the exam. Admit cards usually contain exam details such as the date, time, and exam center.

Always refer to the official information provided by the respective university or the CUET conducting body for the most accurate and updated guidelines. The process might have changed or been refined after the last update, so ensure you are referring to the most recent instructions available on their official website or information bulletin.