Different measures are used to assess the quality and impact of a journal. These measures are one factor to consider when deciding where to publish your work.
Impact Factor (IF): The impact factor is a measure of the frequency with which the "average article" in a journal has been cited in a particular year or period. Source: https://clarivate.com/webofsciencegroup/essays/using-impact-factor/
Eigenfactor Score: The calculation is based on the number of times articles from the journal published in the past five years have been cited in the JCR year, but it also considers which journals have contributed these citations so that highly cited journals will influence the network more than lesser cited journals. Source: https://clarivate.com/webofsciencegroup/blog/closer-look-eigenfactor-metrics/
More information: http://www.eigenfactor.org/
SCImago Journal Ranking (SJR): The SJR is a measure of scientific influence of scholarly journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from.
Source Normalized Impact per Paper (SNIP): Measures citation impact by weighting citations based on the total number of citations in a subject field. More information: https://www.journalindicators.com/methodology
Source: Yale Medical Library, https://library.medicine.yale.edu/tutorials/1329
The journal Impact Factor is a commonly used metric for journals. It is derived from the Journal Citation Reports.
Other measures include the Eigenfactor Score, SCImago Journal Ranking (SJR), and the Source Normalized Impact per Paper (SNIP).