How do i get my score for AB731 beta certification exam given on 27th jan

To obtain your score for the AB731 beta certification exam taken on January 27, you will need to wait until the exam goes live. Typically, you can expect to receive your score about 10 days after the exam becomes available worldwide, which is approximately 10-12 weeks after the beta period begins. This process includes a thorough analysis of results and data from the beta exam.

Once the exam is live, you can check your score by visiting your Learn profile and selecting the Certifications tab. If your score does not appear there after at least two weeks from when the exam goes live, you should contact the exam delivery provider for assistance.

The AB-731 exam is still in beta. You are told this when you finish the exam that your result will not be available immediately

https://learn.microsoft.com/en-us/credentials/support/about-beta-exams

If you’ve taken a beta exam, you’ll receive your score about 10 days after the exam becomes available worldwide or “goes live” -- approximately 10-12 weeks after the beta period begins. This time reflects a comprehensive process including statistically analyzing results and data, evaluating the performance of each question and reading and evaluating all comments provided during the beta exam. As a result, you may not receive a score for 14 weeks depending on when in the beta process you took the exam. Please note that the beta exam process and the time it takes to receive your results may vary.

The exam is due to go live at the end of this month, so your result will be available mid-February.