Neutral responses are not counted in the scoring of your results.
The purpose of the CliftonStrengths assessment is to help you begin to discover your most dominant talents by identifying the areas, or "themes," in which they lie. It does so by presenting you with a situation in which you are forced to select between two options that are different, but not necessarily opposite.
Obviously, if you can't make a selection because you feel that neither choice applies to you, your neutral response will not count in the final scoring process.
Less obviously, if you can't make a selection because you feel that both choices apply to you, your neutral response will still not count in the final scoring process. This is because sometimes the most revealing choices are between two positives. If both statements apply to you equally, then this pair of statements probably is not tapping into one of your most dominant themes.