Postgres 14

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CREATE TABLE mytable (
  "country" VARCHAR(7),
  "value" JSON,
  "count_" INTEGER
);

INSERT INTO mytable
  ("country", "value", "count_")
VALUES
  ('Algeria', '{"validated": "correct"}', '5'),
  ('Algeria', '{"validated": "incorrect"}', '1'),
  ('USA', '{"validated": "correct"}', '486'),
  ('USA', '{"validated": "incorrect"}', '21');
4 rows affected

SELECT 
"country",
MAX(CASE WHEN "value" ->> 'validated'  = 'correct' THEN count_ ELSe NULL END) AS  correct
,
MAX(CASE WHEN "value" ->> 'validated'  = 'incorrect' THEN count_ ELSe NULL END) AS  incorrect
FROM
    mytable
GROUP BY "country"    


country
correct
incorrect


Algeria
5
1

USA
486
21


SELECT 
"country",
max(count_) filter (where "value" ->> 'validated' = 'correct') AS  correct
,
max(count_) filter (where "value" ->> 'validated' = 'incorrect') AS  incorrect
FROM
    mytable
GROUP BY "country"    


country
correct
incorrect


Algeria
5
1

USA
486
21