In my experience, no. I hope this is an update released this year. This kind of functionality makes developing in Airtable quick and easy. It would no doubt save time when building in Fibery too.
In my case I need to generate an 8 character alphanumeric string as part of a user friendly ID. This part is easily handled by a script. It would be ideal if I can simply return this string from the script and then reference it as a step result later in my automation.