Is there a way to save the output of ip-scan executed from a script?

Add additional command argument as-value and output then can be passed to variable or other command argument. It will not be same output as printed on CLI, as-value returns key-value array, but that can be formatted for some file output if needed.

Thank you but I don't know how to work with as-value.

I tried researching, but the explanations are of limited use.

Example: this will iterrate key-value array from command result (modify this depending on your needs), print records in CLI and if records are populated (if ip-scan command did found some addresses) will save to (overwrite) file named in filename variable (scan.txt) with content header "IP scan records:\n" (you can change this in add contents=... command).
Key-value array from this ip-scan result can contain values in keys: , , , and , you can modify record string variable in format depending on your needs and what you want to extract for each scan record (example uses only values from address and mac-address keys).