Dear Jamel Mejri As they state themselves they have currently no (official) impact factor https://qtanalytics.in/journals/index.php/IJERR/impact-factor since they are not included in Clarivate's Master journal list (which can be checked here https://mjl.clarivate.com/home ).
However they have a CiteScore assigned by Scopus https://www.scopus.com/sourceid/21101140508, this is the second best metric around.
One little disturbing thing when one looks at the Scopus content coverage in the above Scopus link, they accepted and published significantly more papers in 2023. This can be a reason for discontinuation for Scopus during the next evaluation round. So, be careful.