There are various methods of measuring the impact of a publication, a researcher and their research.
Why I wrote an impact CV - Nature - 1 February 2022
A science impact framework to measure impact beyond journal metrics - PLOS One - 22 December 2020
To find an author's impact beamplot and H-index count in Web of Science:
The Web of Science has a module called Journal Citation Reports that tracks journal impact factors. The Library does not have a subscription to this module.
Changes to Journal Impact Factor Announced for 2021 - Scholarly Kitchen - 7 December 2020