I installed the pssh package on my Centos 7.6 machine as described in https://www.cyberciti.biz/cloud-computing/how-to-use-pssh-parallel-ssh-program-on-linux-unix/
After installing the package, I can see the pssh, prsync, pnuke, and pslurp commands, but not the pscp command.
If I type “yum whatprovides pscp”, it says that command is provided by putty; however, that does not appear to be a parallel scp command. All the other commands are listed as being in the pssh package.