TOAD - LOOP With A Select Statement

I can work with 'straight' query's etc., but now I want to make a query with a loop. I have made a simple one to demonstrate what I want but the real one is working is working by it self but I want to get it work with a loop.

This is the simpel version:

DECLARE

P_UID NUMBER;
Max_UID NUMBER := 42220;

BEGIN

P_UID := 42210;
LOOP
select *
from contract lc
where lc.UIDCONTRACT = P_UID;

P_UID := P_UID + 1;
EXIT WHEN P_UID > Max_UID;
END LOOP;
END;

The error I get is:

Line 10, column 9:

PLS-00428: an INTO clause is expected in this SELECT Statement.

So I know you can declare a variable and then CONTRACTID INTO v_contractID.

But if I have to put every field in a variable what is then the advantage of a loop. So I expect that I'm on the wrong road and not understand how this works.