Collocations for credentials - noun

excellent, impeccable, impressive, perfect | academic, educational | diplomatic, political, scientific, etc. | democratic, green, socialist, etc.

have
He has perfect credentials to make an officer.

establish, prove
City established their championship credentials with a 6-0 win.

emphasize, strengthen, underline

~ as
First, he had to establish his credentials as a researcher.

~ for
She had excellent credentials for the job.

present | check, examine