A variety of research & scholarly impact metrics are available, with guides to the most common available here.
Information on additional metrics may be found at the Metrics Toolkit and Snowball Metrics sites.
Improving Metrics
Using best practices can increase citation rates.
Studies suggest 5 ways to increase citation counts, Nature Index, Aug, 2019
Citation Best Practices, Washington State University
Journal Evaluation
Journal Citation Reports (JCR) - Web of Science-based database that ranks journals according to their citation influence. If a journal is not listed in JCR, it could be a sign that it is not considered a reputable scholarly publication.
Please note that while coverage is constantly growing, it is not comprehensive. For further assistance, feel free to reach out to a librarian.