In ResearchGate, open the page of one of your publications and click on "Citations", if this word is followed by a number. See also https://www.researchgate.net/profile/Paolo-Maggi-3/stats/citations (visible only for you, not for others). However, ResearchGate's algorithms does not find all citations, and sometimes the identification of a citation is wrong. You will also find citations on other platform like Google Scholar, often more completely than at ResearchGate.