If you mean this game Ladder Challenge: UJ35812(#2206) vs psicohistoriador(#1373) then it is correctly scored given you both passed and wanted to score that position. If White was stronger White may have realised he still had good moves to capture some of your stones, or if you were stronger you would have played some defensive moves losing points to prevent that, which is why KataGo shows a different score for its ESTIMATE ASSUMING HIGHLY SKILLED PLAYERS CONTINUE THE GAME TO ITS ‘CORRECT’ CONCLUSION which is not the same thing as a score tool.