Open the VTEX APP Store and install the app on your store.
or
Run the following command:
vtex install vtex.hotjar@0.x
Next, open the app settings on your admin and fill the form with Site ID.
Setup in Cart and Checkout page
Open your admin in the Checkout section in the checkout6-custom.js:
https://ACCOUNT.myvtex.com/admin/portal/#/sites/default/code/files/checkout6-custom.js
Add the following snippet in the file and replace "YOURSITEID" with your Site ID:
// Hotjar
(function(h,o,t,j,a,r){
var siteId = 'YOURSITEID';
h.hj=h.hj||function(){(h.hj.q=h.hj.q||[]).push(arguments)};
h._hjSettings={hjid:siteId,hjsv:6};
a=o.getElementsByTagName('head')[0];
r=o.createElement('script');r.async=1;
r.src=t+h._hjSettings.hjid+j+h._hjSettings.hjsv;
a.appendChild(r);
})(window,document,'https://static.hotjar.com/c/hotjar-','.js?sv=');
Click Save.