I think you want to know if you can apply for the IBPS clerk exam while you are in your final year of BE degree.
The answer is short and straight- NO. As per the recent information, you need to produce a valid under graduate degree/ marksheet at the time of application only. So, you need to complete your final year exams first of all. And your age must be between 20-28 years. If you are waiting for your final year results, then you can start preparing for the entrance test. IBPS Clerk Registration window for November exams is reopened from October 23 to November 6, 2020. If you are expecting your results between these dates, you can apply for the exam.
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All the best!