I take it your script is using the 'Insert from URL...' script step. With this I don't think you can suppress the progress indicator, though you can get rid of the 'Slide to Cancel' button, by using the 'Allow User Abort [Off]' script step at the beginning of your script.
Otherwise, you might be able to use a Web Viewer to load the URL content and scrape it from there using the 'GetLayoutObjectAttribute' function... With a Web Viewer, you can choose whether or not to display progress, messages etc... However, Insert from URL is much nicer to use in many circumstances, e.g when getting results from API requests etc...
Yes, you are correct, I am using "Insert from URL" to call PHP API.
I have already implemented your suggestion to get rid of slider control.
Is it possible to change text from "URL Data Transfer" to some thing more meaningful to end user
that will be a great help.
Thank you very much for helping me.
No, the 'URL data transfer' text can't be changed. However you could notify the user about what is going to happen before the event, or afterwards to confirm it has completed by showing a custom dialog, or other ways such as using a merge variable or status field on your layout...