You are right Ivermectin is an antiviral and also right many Americans (and not only) took it. The results however, according to Google at least, seem to be at most "meh". The first results page shows only one positive correlation: in hamsters. But I'd be happy to see some more positive studies.
Pfizer found out it was a protease inhibitor and made a new expensive patent drug based off this completely useless and dangerous right wing propaganda. This completely pointless and horrible unsafe ivermectin's effects were amplified to cure COVID.