These events are captured through the InstantSearch front end.
The backend search adapter
doesn’t capture click and conversion events on its own.
If backend rendering is needed, run your store in hybrid mode with InstantSearch to keep tracking analytics.
Enable click analytics
Set Enable Click Analytics to Yes to turn on click and conversion analytics.
clickAnalytics=true to every search.
The default for this setting is No.
DOM selector of a result container on InstantSearch page
Enter a DOM selector for the search results container to define which elements on your page are tracked. The elements selected must have thedata-objectid and data-position attributes.
This default DOM selector is .ais-Hits-item a.result, .ais-InfiniteHits-item a.result.
Enable conversion tracking
To determine how well Algolia helps achieve your business objectives, enable conversion tracking. Previous versions of the extension required you to specify which event you would like to track as a conversion, either Add to cart or Place order. From version3.14 Algolia tracks both types of conversions.
To do this, set Enable Click Analytics to Yes:

To be considered a conversion,
a user must have interacted with your search at least once during the session for the product being considered.
queryID, objectID, and indexName parameters.
You need to include these parameters for your clicks and conversions to work.
For better SEO, you should use canonical link meta tags for your product pages.
To enable canonical links, go to Stores > Configuration > Catalog > Catalog and set Use Canonical Link Meta Tag For Products to Yes.
If you’re using an alternative method to track the queryID, objectID, and indexName parameters for your conversion events,
you can remove the URL parameters by editing the
common.js file.
URL parameters added to product links
From version 2 and later, URL parameters are appended to the product links in your search if you enable conversion tracking. This is so search can be tied to a conversion event using thequeryID parameter.
As best SEO practice, use canonical links for your product pages.
Enable this setting by going to Stores > Configuration > Catalog > Catalog > Search Engine Optimization > Use Canonical Link Meta Tag For Products in your store’s Admin
Revenue analytics
This feature isn’t available on every plan.
Refer to your pricing plan to see if it’s included.
Revenue is calculated based on the final sale price of an item (after all discounts are applied) multiplied by the quantity ordered for that item.
Since Magento shopping cart price rules only take effect in the context of the entire order,
these particular discounts are only included when calculating the revenue data that’s sent with the Place order event.
Version 3.14 uses version 4 of the Algolia PHP API client to support this feature.
Version 4 of the client requires PHP 8.
Plan for this upgrade accordingly before pushing to production.
DOM selector of Add to cart buttons
Enter a selector for the Add to cart button if the conversion analytics mode is set to Add to cart. The elements targeted by this selector must have thedata-objectid attribute (unique product identifier).
The default is .action.primary.tocart.