How to update from a select statement?

I need to update the STATUS field of my CLIENT_REQUEST_APP table when the CREDIT field = 'Y' then STATUS = 'GATEKEEPER'

So far I have this but how to integrate the UPDATE

DECLARE 
    :P2_CLIENT_ID := l_client_id;
    
    
   BEGIN
       SELECT  CREDIT FROM  CLIENT_REQUEST_APP
       WHERE CLIENT_REQUEST_ID =  l_client_id;
       IF CREDIT = 'Y' THEN  STATUS = 'REQUEST'; ---quiero actualizar el campo status de la tabla CLIENT_REQUEST_APP
       ELSE STATUS = 'GATEKEEPER';
       END IF;
   END;