It's a pretty simple aggregate query:
https://support.microsoft.com/en-us/office/sum-data-by-using-a-query-430a669b-e7fd-4c4b-b154-8c8dbbe41c8a
Instead of Summing, you get the MAX:
SELECT Player, MAX(Points) AS HighestScore
FROM YourTableNameHere
GROUP BY Player
ORDER BY MAX(Points)