To connect your Clash of Clans account to Google on iPhone, follow these steps:
1. Open the Clash of Clans app on your iPhone.
2. Tap the Settings icon in the bottom-right corner of the screen.
3. Tap the Link a Device option.
4. Tap the Google option.
5. Enter your Google account credentials and tap the Sign In button.
6. Tap the Allow button to grant Clash of Clans access to your Google account.
7. Tap the Done button.
Your Clash of Clans account is now linked to your Google account.