Hi,
I recently migrated a lot of large SAP systems to Google Cloud Platform and learned a lot.
If you also want to start with SAP on GCP, I developed a few Shell scripts for you. With them you will also get an up and running SAP system on GCP. You don't need a paid customer relationship with SAP for this. The free version of SAP NetWeaver AS ABAP Developer Edition 7.52 SP04 is used.
If you're already an SAP customer, you can connect the SAP Cloud Appliance Library to your Google Cloud Project. You can then deploy an up-to-date SAP S/4HANA system in just a few minutes...
» Feel free to check it out on GitHub: https://github.com/Cyclenerd/sap-on-gcp-scripts
I hope it will make it a little easier for you to get started with SAP on Google Cloud Platform.