If you mean your text https://www.researchgate.net/publication/391437807 at ResearchGate: Please note that ResearchGate is neither a journal nor a publisher, therefore you cannot "publish" a paper here. It is a platform for papers published in journals, or to present unpublished texts, data etc. See also "Is ResearchGate a publisher?" in https://help.researchgate.net/hc/en-us/articles/14292596164753. ResearchGate does also not send acknowledgement emails for uploaded texts.

I recommend to remove the file from ResearchGate, otherwise you may have problems when you will submit it to a journal. See https://help.researchgate.net/hc/en-us/articles/14293099743121-How-to-make-content-private-or-remove-it for instructions.

If it's regarding a paper you submitted to a journal, most online submission systems will have instant acknowledgement emails sent to you. Otherwise, if via email, it should take no more than three days, after which, you may contact the editorial team for clarification.