You didn't 'bleach' it so some (maybe most?) data can be recovered using data recovery software but the data that was written over by the window's install are not recoverable. You may find a lot of partially written and corrupted files, unfortunately.
Been there, sucks.
Asus Prime Z370, Intel 8700k @5.0Ghz, Nvidia GTX 1080 Ti, 16GB @3400 CL14, Watercooling: x2 MCP355 pumps, x1 280 on front of case, x1 360 on top of case, x1 140 on back of case, x1 240 on bottom of case