why is the bar with the execution button all greyed out?

because you are not connected with the server

Hi Kelise and Somil!
Thanks for reaching out.

@: Somil
Thanks for sharing this piece of information with the Community!

@: Kelise
As Somil explained you need to connect to the server. Please, refer to the following lecture. Thank you.
https://learn.365datascience.com/courses/sql/setting-up-a-connection/

Hope this helps.
Best,
Tsvetelin