You can track conversions in Google Ads for affiliate sales by setting up conversion tracking. You can create a conversion action in your Google Ads account to track affiliate sales. You can add a conversion tracking tag to your landing page to capture data. You can set up UTM parameters in your affiliate links to track traffic and conversions. You can link Google Ads with Google Analytics to get deeper insights into your affiliate sales. You can monitor the performance of your ads and adjust bids accordingly. You can review your conversion data to optimize future campaigns for better results.