The Google Ads conversions' page says that no tags/pixels were detected for the conversion action I just set up through Hubspot Marketing->Ads->Events.
In the event creation flow, it asked me to choose an Ads account for the pixel and it confirmed the selection. So there should be a tag under the conversion action Hubspot auto-generated for me on the Google Ads account's conversions page.
I'm trying to set up Ads conversion tracking via Hubspot contact form submissions.