Business credit scores for commercial leases, known as a PAYDEX score by Dun & Bradstreet, range from 0 to 100, with 100 being the best score. Here is a breakdown of the score ranges: 0-49. High risk of late payment (average of 30 to 120 days beyond terms) 50-79. Medium risk of late payment (average of 30 or fewer days beyond terms) 80-100. Low risk of late payment (average of prompt to 30 days within terms)