Dear Dr Mohamed Parvees . The background synchroniser process will update these citation counts when they are updated in Scopus or Web of Science (WoS), which can be every three months. See the link : https://staffhelp.secure.griffith.edu.au/app/answers/detail/a_id/3535/~/how-often-do-the-scopus-and-wos-citation-counts-get-updated-in-elements%3F
Concluding with the number of citations for the previous year (e.g. 2020), calculated by 30 April of the current year (e.g. 2021) and published by 10 May.
This means that officially list of citation statistics and indexation will start from may next year, for the previous year when the Journal was indexed on Scopus. You can see if it is currently posted on the Scopus by clicking on the first link above (https://www.elsevier.com/?a=91122 ). Document is updated monthly, september is last update.