How to browse an query id not follow PostgreSQL - sql

Question

I need your help about an modification of my actual code. Here it is :
\timing on
DO $$
BEGIN
DECLARE
i INT := 1; -- valeur de départ à changer pour la range d'id
j INT := i + 1;
numberUsers INT; -- Changer valeur numberUsers pour fin de la range d'id
commonSkills INT;
random INT;
idSphere INT := 2;
BEGIN
SELECT COUNT(*) INTO numberUsers FROM "WU_Users"; -- si numberUSers est modifié, commentez la ligne
WHILE i < numberUsers LOOP
WHILE j <= numberUsers LOOP
IF i !=j THEN
SELECT floor(random() * 10 + 35)::INT INTO random;
INSERT INTO "WU_MatchingUsers"("IDWU_User1", "IDWU_User2", "MatchingScore")
VALUES(i, j, random)
ON CONFLICT ("id")
DO
UPDATE SET "MatchingScore" = EXCLUDED."MatchingScore";
ELSE
RAISE NOTICE 'Same Users';
END IF;
j := j + 1;
END LOOP;
j := i + 1;
RAISE NOTICE 'i: %', i;
i := i + 1;
END LOOP;
END;
END $$;
\timing off
So this code take two id, and with two loops "browse" from i to numberUsers and insert into another table a random matching score, now I need to add this :
SELECT "IDWU_Users_WU_Users" FROM "WU_UsersSpheres" WHERE "IDWU_UsersSpheres" = idSphere;
This line return me a list of id from another table that I need to match, like the script above I match in this order :
1/2
1/3
etc etc
But now this new line can return me id like that :
532
1426
3236
84697
And I need to make the same matching system than before so like that :
532/1426
532/3236
532/84697
Kind Regards !