Definitely a false positive. Names like that (i.e. "Trojan:Script/Wacatac.B!ml") are pretty generic, and it's basically the AV software's way of saying "this might be a virus. Maybe. I think? Possibly." This is called a heuristic match, and it essentially searches for "suspicious behavior" (note that sometimes even something as benign as a decompression algorithm can trigger this) rather than a confirmed positive match.
The best way to know for sure is to upload it to an aggregate site like VirusTotal. If a majority of the scanners agree that it's badware then, yeah, it should likely be avoided. FSGodot.exe, however, comes up with this:
View attachment 2093891
If 1 out of 69 scanners detect it, it's safe to say that it's a false positive.
I can speak on this from experience as well. I used to contribute to an open-source project, and we constantly had issues with Windows Defender flagging the 32-bit Windows version (not the 64-bit version, mind you) of our application as a trojan. Every single time we were ready to do a release we'd have to send a file to the Microsoft anti-virus team to explicitly whitelist the application. It was beyond annoying.