It depends on why it was cancelled. If ICVA cancels your score for candidate-specific validity concerns (not misconduct), you may retest once without paying the application fee again — a second such cancellation would require full payment — and the attempt would count toward your 5 attempt limit. If the cancellation was for a systemic reason (a compromised exam form, a technical failure, an administration error, or third-party misconduct not your fault), that attempt does not count toward your lifetime limit.