Connect my HomePod

You need the Home App installed, if you don’t have the App you can reinstall it from the App Store . Every iOS device has one, unless you deleted it. (It’s a yellow house icon)

Set up and use HomePod - Apple Support

See also: if you can't set up HomePod.

You connect via the HomeKit app.

https://support.apple.com/en-us/HT208241