The makeup test has been set for those who:

Missed the regular test (did not take it at all)
Took the test on a wrong date (took the test but not on the right date)
Experienced technical difficulties while attempting the test.
Scored below 80 percent (in any of the trials or sections) or are dissatisfied with their performance. If you sat for the regular test and decide to take the makeup test, the test where you have scored higher will be recorded for you by the system.

So if you performed poorly in the makeup test, the system will retain your former score.

Kindly follow the procedure in the link below to participate in the makeup test.
https://www.jobsgivers.com/job/susdevi-schedule-and-guideline-for-makeup-test-is-out/