If you did a bit of searching on here you would likely find the following previous discussion that pertains directly to your problem.
https://community.ptc.com/t5/3D-Part-Assembly-Design/flat-pattern-from-helical-sweep-simple-archimedes-screw/td-p/499362
You cannot make a flat pattern for the full screw. The spiral, when "flattened" is overlapping. As far a I know, people who build to make cyclones and screw tanks and the like projects build them with 90, 180, or maybe 360 degree sections. Maybe there's a way to feed in flat "ribbon" and massively deform it to make the screw shape and spiral it, but I haven't seen that.
