Recently Google’s John Mueller quoted that Google doesn’t use spam scores. According to him sometimes third party tool shows spam score.
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The procedure of Penalty By Google:
According to John Mueller Google will penalize the website with multiple algorithm penalties or sometimes take manual actions but doesn’t use any spam score. Google gives an individual score to each penalty or spam penalty but doesn’t give an overall spam score to the websites.
Tweet:
Google doesn't use the spam score.
— ? John ? (@JohnMu) November 12, 2019
The Moz spanm score can sometimes be useful to us on link audits but we never make decisions based on spam score alone. Are these links you made for SEO?
— Marie Haynes (@Marie_Haynes) November 12, 2019