After alot of digging yesterday and following the suggestions on. Here are my links that worked for me for Windows.
Used GitBash
Follow the guidelines on this page. https://developers.squarespace.com/local-development/
I had to use this command to allow Ampersands running the file. https://medium.com/@caiomsouza/fix-for-powershell-script-not-digitally-signed-69f0ed518715
And you have to switch the squarespace-server version! This is what got me googling for awhile.
npm uninstall -g @squarepace/server
npm install -g @squarespace/server@1.6.2