If I run a script, is there a way to run it again without doing
You can create an action, assign an F-key to the action, then use the F-key.
Insert Menu Item command located in the Action Panel Menu to insert the call to the script.
But be aware, when you quit Illustrator, the action loses the connection to the script. So, each time you launch Illustrator, you have reconfigure the action. This is a long standing bug in Illustrator.