having an error in a sql code can someone help?

SELECT

ComptetitorId, $--$ test determinant

Year, $--$ test determinant

COUNT$(*)$

FROM

$($

SELECT DISTINCT

CompetitorId, $--$ test determinant

Year, $--$ test determinant

Age $--$ test dependent

FROM

Olympics.Competitor

$)$ AS AgeTest

GROUP BY

ComptetitorId, $--$ test determinant

Year $--$ test determinant

HAVING

COUNT$(*)>1$;