How to use acrocmd on a macOS machine:

1. Log in to the machine as a User that is part of SUDO group.

2. Open Terminal (Launchpad - Other - Terminal)

3. Open the /Library/Application\ Support/BackupClient/Acronis/sbin/ folder:
cd /Library/Application\ Support/BackupClient/Acronis/sbin/

4. Run acrocmd utility:
./acrocmd <command>

Example:
./acrocmd validate archive --loc=<location> --credentials=<user>,<password> --arc=<archive name> --progress