Get specified version for atomization

[AndreM222]

Currently I am trying to work in a script with PowerShell that it automizes the setup of everything I run in terminal. Everything I was able to make it work except the nvm version. I wanted to do it based in search but I cant store the value inside a variable to compare because an error pops saying Terminal only

So I as well tried using the nvm use to check if installed by catching it with a try catch and if not then install. It stays in a loop for max of 4 tries to install the version. But if I run that as well the same warning appears in my screen and it fails to check.

What can I do to get if a version is installed and add it to an if statement.