Paste your AnswerScan fixes into Shopify
robots.txt
Online Store → Themes → Edit code → Add a new template → robots.txt.liquid. Shopify generates robots from this template; apply your fix pack's AFTER lines as liquid rules (Shopify docs: "Editing robots.txt.liquid").
llms.txt
Shopify cannot serve arbitrary files at the domain root. Honest note: skip it or use an app that serves /llms.txt. It is worth 6 of 100 points — do the schema and FAQ first.
JSON-LD
Edit code → layout/theme.liquid → paste your schema inside <script type="application/ld+json">…</script> just before </head>.
FAQ block
Add a "Custom Liquid" section to your homepage in the theme editor and paste faq.html. Paste faq-schema.jsonld into theme.liquid next to the other schema.