What does the shell scripts do ?

It is a collection of Harmony Pangaea Node commands to find

1. Node Block number
2. Wallet Balance
3. When did my node last sync/get the bingo message?
4. Which Shard does my node belong to?

How do I run them ?

Copy the .sh file to your server, give execute privileges, run!

chmod u+x pangaea-node-health.sh
./pangea-node-health.sh

Does Harmony team publish status of Shards and the latest block number for each Shard?

Yes, you can find it here https://harmony.one/pga/network

I think my node is messed up, how do I restart?

https://docs.harmony.one/pangaea/troubleshooting/how-to-restart-your-node/regular-setup-or-one-click-setup

Official documentation for Harmony Pangaea ?

https://docs.harmony.one/pangaea/

How do I know if the Pangaea Blockchain has been reset?

Look for announcements here https://t.me/Pangaeaannouncements

Where can I find more help?

Discord --> #pangaea channel on https://discordapp.com/invite/rdCmBpe Telegram --> https://t.me/harmonypangaea