To configure lead syncing for your Google Ads account:
In your HubSpot account, click the settings iconsettings in the main navigation bar.
In the left sidebar menu, click Marketing > Ads.
Click the Lead Syncing tab.
In the dialog box, select Google Ads.
If you have multiple Google Ads accounts connected, select the checkbox next to any account that you want to sync leads from.
If you have a Marketing Hub Starter, Professional, or Enterprise account, the Marketing contacts switch is toggled on by default. If you want synced leads to be set as non-marketing contacts, click to toggle the switchoff.
Users who fill out the lead form on your ad will then sync to your HubSpot account as contacts.
Necessary disclosure: if you configure your Google Ads account for lead syncing, HubSpot will receive webhook updates when a new lead form submission occurs in your account. HubSpot will pull all lead submissions for the connected ad account, and will log them as form submissions in the CRM.