If we are talking about a module awscli, since you are installing the module in user space, it is most likely installed in %APPDATA%\python\<python_version>\site-packages\awscli- if you are not sure what you can always do:
python -m site --user-site
site-packages, .
, " ", script aws.cmd script %APPDATA%\Python\Scripts ( python -m site --user-base, %APPDATA%\Python ), , aws.cmd do:
%APPDATA%\Python\Scripts\aws.cmd s3 cp /source s3://bucketName
P.S. , 15 -. , , .