Answer 1

super (numero );
There is no access to numero here in the constructor it's not passed in. Did you mean num?
super(num );

You're missing the "new" keyword when creating your ClientCodimed objects in main.

ClientCodimed myclient = new ClientCodimed (1,"ADRENALINE",1,1611903,"01/07/2019","01/06/2021");

ClientCodimed myclient1 = new ClientCodimed (2,"THIOPENTAL",1,47289,"01/01/2019","01/12/2020");