Scopus allows users to find the CiteScore, and CiteScore rank & trend by selecting source in the source line in the results screen of a Scopus search.
To see this information in a journal search, search for the journal title after selecting "Source Title" in the all fields box on the search screen. Then perform your search, putting quotation marks around the journal title. This tells the system to search the words in the title as a phrase.
Then you can retrieve the CiteScore information by selecting the source link in any record in the results list.