مجموع النقاط الصحيحة
أو

مجموع الأعدات الصحيحة

number-correct = this is a noun noun structure - the first noun (number) modifies (functions like an adjective to) the second noun- so number here functions like an adjective. then the second noun modifies the third, in other words, functions as an adjective to the third.
Score = قد تعني درجة او ايجابة
In Arabic the order of modifiers is not the same as that in English
for example for a compound like - telephone number you may have
رقم التليفون - الرقم التليفوني
In Arabic the modifier follows the noun- like in the above phrase in Arabic, telephon modifies number just like in English but the order is not the same.