I will answer the question on interpretation of the scale:

1. Is this scale used before and are research results published? Did authors come up with an interpretation? You shall do a literature search to answer this and find out. If you do not do this, why would you have applied this CSS-12 in first place.

2. What are the actual answer categories? Are these of Likert type? Then the load for low - moderate - high can be interpreted from generic question and answer rules for such scales. See scientific literature about construction of Likert type scales and instruments.

3. How did you apply it to your participants? Low = 1, moderate = 2, high =3 is quite common. Perhaps the manual gives a hint to that. If that is the case number of questions x score gives a good option to interpret the total scores per participant. And from there you can move to interpret at group level.

Say 10 questions, then 10 x 2 is moderate and 10 x 3 is high. You might consider anything between 20 and 30 as an appropriate level or high enough and hence, anything between 10 and 19 as inappropriate or too low.

You can never generalize from one instrument to the other how the individual scores to questions and the total score must be handled. Each scale or instrument has its own number of questions, each direction for each question (normally some Q are more positively worded and others more negatively to prevent bias in answering), and each different number of answers. The only more or less comparable approach is with Visual Analogue Scales, such as the pain scale.

And even within the scale CCS-12 you cannot interpret from question 1 to question 2, unless the loading of each question is similar (both positive, or both negative). This requires each question to have exactly the same Likert scale (there are instruments applying a different Likert scale to each question).