There's no such thing as a "spam score" except as an arbitrary number created by some SAAS companies
If your site is spammy, it's spammy. If you're doing spammy things to try to rank the site, you know what you're doing. If it's not ranking, clean it up and see if that fixes the problem.
PS - if you're talking about MOZ spam score - https://moz.com/blog/spam-score-mozs-new-metric-to-measure-penalization-risk - that's an example of what I said. They identified some factors that seem to correlate with spammy penalized sites and they count how many of them a site has. Search engines don't use this metric, just MOZ. A site could have a high MOZ spam score and still not be spammy.