Add the relative path to the CDS icon font to your react-native.config.js. If your project lives in the monorepo this lives in the root react-native.config.js file. There is an example for CDS playground in there.
In this monorepo, run the expo-app targets from the repo root:
yarn nx run expo-app:ios or yarn nx run expo-app:android for local development
Outside monorepo
Install package with yarn add @coinbase/cds-mobile.
Update react-native.config.js to include icon font in assets, i.e. assets: ['./node_modules/@coinbase/cds-mobile/icons/font'].