Until this moment, ResearchGate has not yet found any citations of your publications. However, this does not necessarily mean that there aren't any. Other platforms like Google Scholar may have found these. See https://www.researchgate.net/post/Why_citation_score_for_author_publications_looks_different_on_Scopus_research_gate_google_scholar on this difference.

Generally, you will find your citation statistics by ResearchGate in https://www.researchgate.net/profile/Radojica-Stolic-2/stats (click on "Citations" when there will be any). Or open individual publications and click on "Citations" (provided there is a number in parantheses behind "Citations").