Unclear where to get env vars

I dont understand where we get the env vars from? I go to:

Shopify Dashboard Apps Create apps in dashboard that takes me to shopify.dev.com where I create a new app Newly created app Install app (seems to be installed ok) In settings of newly created app I see "cliend id" and "secret", but they dont seem to relate to: SHOPIFY_REVALIDATION_SECRET or SHOPIFY_STOREFRONT_ACCESS_TOKEN

Does documentation need to be updated or am I missing something?