Official website: https://ibotpeaches.github.io/Apktool/install/
Follow the instructions to download apktool.bat and apktool.jar
Then put it under c://windows
Then put the apk file in this directory and then cmd consult the command
apktool d xxx.apk
Please run cmd with administrator privileges as much as possible
Then it's in the xxx folder
The required documents can also be found in the attachment