shershnovdima

=IFERROR(IMPORTXML("https://www.youtube.com/watch?v=EJVSx6CUFFc";
                   "(//*[contains(@class,'like-button-renderer-like-button')])[1]");0)

=IF(
  ISNA(IMPORTXML("https://www.youtube.com/watch?v=EJVSx6CUFFc";
                 "(//*[contains(@class,'like-button-renderer-like-button')])[1]"));
  0;
  IMPORTXML("https://www.youtube.com/watch?v=EJVSx6CUFFc";
            "(//*[contains(@class,'like-button-renderer-like-button')])[1]")
)