I'm quite suspicious about if such commands as "fsck_xxx" will meet your purpose. These commands usually aim to check the corrupted file system or broken file links. Under your situation, if the partition had been kept the size unchanged while formatting it into FAT32 from NTFS, maybe this software named "Disk Drill 3" could carry out “quick scan or deep scan" to locate the ntfs files before the format. So I suggest following steps:
1, Check out the free version "disk drill 3" software for MacOS, https://www.cleverfiles.com/file-system-recovery-mac.html. Contact with the technical guys of the company may get better understanding of your concern and suggestions.
2, Running "preview of all recovery method" function of the free version software to check if there are any recognizable files on the bootcamp partition.
3, If nothing could be found on that FAT32-format partition, use the MacOS's disk utilities to reformat the partition back to NTFS; repeat step 2 again.
4, If you found the files and think them worthy of the money for the Pro version, pay and use the pro version to do the deep scan and get recovery of your files.
I never use this "disk drill" software to recover files in a formatted bootcamp partition. Hope you good luck and find all your files back.