Scopus and Google Scholar offer the ability to generate an author's citation summary, including h-index and a number of other citation metrics.
If you wish to manually generate your own h-index, especially if many of your publications are not included in one of the above databases, see the link below for more details.
Some publishers feature usage information, including views and downloads, on the journal's homepage. If this information is not readily available for your articles, you can try to contact the publication's editor to request it.
This guide was reused and adapted from Promotion & Tenure Resource Guide, by Iowa State University Library. Available: https://instr.iastate.libguides.com/c.php?g=49493&p=318774.