It is always useful, depending on where it is used. Every award is a certificate, which proves that there is one more advantage and one more difference than those who don't have it. How can employers quickly distinguish different people in a pile of resumes, not by grades, experiences, certificates and so on. You should also have a score to distinguish the importance of certificates. What nature, what level, what scope. If it is useful, you can add points in the comprehensive test and give people an impression that English is ok on your resume.