Connect to the remote VM
gcloud compute --project "<Project-Name>" ssh --zone "us-central1-a" "<Instance-Name>"
Copy a file from local to remote VM
gcloud compute scp ~/Desktop/test.csv datacommons:~/REMOTE-DIR --zone us-central1-a
Copy a folder from local to remote VM
gcloud compute scp --recurse ~/test <Instance-Name>:~/ --zone us-central1-a