In the Results list of Google Scholar, below the entry for each result that has been cited, will be a 'Cited by [number]' link. The [number] is how many other entries Google Scholar has found that cite that work. Some of these may be duplicates. Click the link to see a list of citing works.
If there is no 'Cited by' link, then Google Scholar has not found any citing works. That does not mean it hasn't been cited, just that GS doesn't have records.
Note: pay attention to dates. Extremely new articles will have few if any 'Cited by' works, just because no one has had time to publish anything newer. Classic and high impact works may have hundreds (even thousands) of 'Cited by' works.