Altmetric Attention Scores are complementary to traditional, citation-based metrics. (source: https://www.altmetric.com/about-altmetrics/what-are-altmetrics/). A score is calculated for the work rather than the author.
Altmetric Attention Scores for works are available with the bibliographic records in several sources including Dimensions.ai and the SUNY Open Access Repository (after a manuscript has been submitted).
(Screenshot from Dimensions.ia)
What is altmetrics counting and how do altmetrics help authors? (source: Wolters Kluwer).
Numbers behind Numbers: The Altmetric Attention Score and Sources Explained
Increasing Your Altmetric Scores for Research
Five Ways to Boost your Research Impact and Altmetric Score, including
The three things needed for Altmetric to track your work:
Help with DOIs, ORCID iDs, etc., is available from the Health Sciences Library.