How do I create an email that automatically sends when there is a new SO only sent once to notify the newly created SO information? And when someone comes in to fix it, I won't continue to send emails anymore

If you are looking above help

Business events can help - Order created - Send an email once 

Create a UDF Field Order reviewed in the sales order.

Add a condition in the business events with “ Trigger by Schedule” and add a scheduler to trigger all the Emails Every30 Mins.

To avoid the same order triggering Multiple emails we are Updating the One User Defined field “ Order email sent” after the Email is Triggered so that the system cannot send an email a second time to the customer/Vendor/Internal Team,

Don’t forget to add a condition in the GI “ order review” is empty.

Let me know if you need BE design from my end.