Using pl/sql output in WHERE-statement - sql

Question

I have a little question. So I'm using the Levenshtein-score to search for a comparison of more than 85% between street names in two different tables. But when I use my Levenshtein-score calculation in my WHERE-statement, I get as output for example this:
street names in one table: BEAU SITE 1ÈRE AVENUE & BEAU SITE 2ÈME AVENUE
street names in the other table: BEAU SITE-1ÈRE AVENUE & BEAU SITE-2ÈRE AVENUE
output: linking between all, first one with first and second on, and second one with first and second.
So I have to use the largest score for all the score-calculations and is this like this:
DECLARE
L_SCORE NUMBER;
L_NEW_SCORE NUMBER;
L_BEST_MAP varchar2(255);
CURSOR C_TO_FIND IS
SELECT TT_NAME, L_MUNI, R_MUNI
FROM Y_TT_NOT_LINKED_STREETS ;
CURSOR C_TOMTOM_STREET (L_MUNI VARCHAR2) IS
SELECT STREET_NAME
FROM STREET_NAME SN
JOIN STREET STR ON STR.STREET_ID = SN.STR_STREET_ID
JOIN ADMINISTRATIVE_AREA_NAME AAN ON AAN.AAR_ADMIN_AREA_ID = STR.AAR_ADMIN_AREA_ID
WHERE AAN.ADMIN_AREA_NAME = L_MUNI
AND STR.STREET_ID NOT IN (SELECT ROMA_STREET_ID FROM Y_DS_STREETS_LINK);
BEGIN
FOR S IN C_TO_FIND LOOP
L_SCORE := 0;
L_NEW_SCORE := 0;
FOR R IN C_TOMTOM_STREET(S.L_MUNI) LOOP
L_SCORE := PCK$ADDRESSMATCH.GET_LEVENSHTEIN_SCORE(S.TT_NAME,R.STREET_NAME);
IF L_SCORE > L_NEW_SCORE THEN
L_NEW_SCORE := L_SCORE ;
L_BEST_MAP := R.STREET_NAME ||CHR(9)||TO_CHAR(L_NEW_SCORE);
END IF;
END LOOP;
IF L_NEW_SCORE > 85 THEN
DBMS_OUTPUT.PUT_LINE(S.L_MUNI||CHR(9)||S.TT_NAME||chr(9)||L_BEST_MAP);
END IF;
L_NEW_SCORE := 0;
END LOOP;
END;
Now is the question, how can I use the output in a WHERE-statement, so that I can link with only the largest Levenshtein-score and the problem above will not occur?
So that:
SELECT ...
FROM ...
WHERE (largest score from previous block code)
(or on another way, after a whole week doing SQL I can't see a solution for this)
Thx! =)