Just be able to interpret them. I have a mnemotechnic way of remembering how they work:
Beneish and Altman scores get worse as they approach 0. The beneish model indicates a high probability of manipulation when you are higher than the critical value, and the altman score indicates a high probability of default if you’re below the lowest critical value (if you’re in between the test is inconclusive, and if you’re above, no probability of defaulting).