This page exists so customers don’t have to reverse-engineer your intentions from an embed snippet and a prayer.
Paste the script tag before </body>. Done. Shockingly civilized.
Add the script in a footer injection plugin or theme footer; keep the bot ID unchanged when updating styles/config.
Add the script to theme.liquid before </body> or use a custom app block later.
Use custom code injection and publish the site after adding the snippet.
Create a bot in onboarding, copy the snippet, and hand it to the client or drop it in yourself.