there is no citation number at one of my papers (its file is attached), but in "google scholar" this paper has 7 citation number, in "publons" it has 5 .
It seems that you asked about this publication: https://www.researchgate.net/publication/332152135 . No "Citations" are indicated for this paper, although there might be such. ResearchGate takes most of the citations from its own database. So, when the papers citing yours are missing in ResearchGate or their full texts are missing, they cannot find citations. Also no "References" are indicated, because it was not possible to extract the references from the file you uploaded. This file is just a scan and contains only images, but no machine-readable text. Only people can read it, but computers are not able to do this.
Oğuz Inel, I am afraid that your question is not very meaningful. Could you try to ask it in a different way, please - and then I (and others) might be able to help you.
Each research aggregator uses their own methods of citation count. Perhaps in your case, RG had 7 references while publons missed the 2 that RG has indexed. It is not necessary that citation counts are in sync with each other.
As the author, you would like to collect the PDFs of those papers who are citing you and the context in which your paper is being cited. You might organize all such files using a coding format that you wish to. Believe me, it is a worthy exercise.
It seems that you asked about this publication: https://www.researchgate.net/publication/332152135 . No "Citations" are indicated for this paper, although there might be such. ResearchGate takes most of the citations from its own database. So, when the papers citing yours are missing in ResearchGate or their full texts are missing, they cannot find citations. Also no "References" are indicated, because it was not possible to extract the references from the file you uploaded. This file is just a scan and contains only images, but no machine-readable text. Only people can read it, but computers are not able to do this.
Oğuz Inel, you're really welcome, and thank you for your courteous response, but it was really the other two people, not I, who knew what you were asking about and who gave you good advice.
I'd just support the kind of advice they offered by saying that different "sources" have different ways of identifying the number of citations that publications receive - and the number of citations detected can vary quite a lot from source to source. In my experience, Google Scholar Citations seems to identify citations quite effectively, but even that site can get things wrong.