Yes, you install the Google Play store via the GrapheneOS App Store. The OS comes with like 5 apps out of the box. The rest is up to you.
Biggest caveats that I've encountered: tap to pay via Google Wallet is a no go, Android Auto can be flaky, MDM managed work profiles don't work at the moment, and some apps that use the Google Play integrity API fail to validate and refuse to work (I've only encountered one app that fails, and plenty others that work.)
In general, I'm moving towards a de-Googled life and GrapheneOS is a great entrypoint towards that.
Biggest caveats that I've encountered: tap to pay via Google Wallet is a no go, Android Auto can be flaky, MDM managed work profiles don't work at the moment, and some apps that use the Google Play integrity API fail to validate and refuse to work (I've only encountered one app that fails, and plenty others that work.)
In general, I'm moving towards a de-Googled life and GrapheneOS is a great entrypoint towards that.