How to fill the prompt in powershell script

I use a command like this:

get-pfxcertificate C:\test.pfx

Enter password: *******

The command ask me to fill the prompt. But I can't do that in my script (test.ps1 for ex)

What I need is like this:

get-pfxcertificate C:\test.pfx -password "123456"

or something similar so I can run my script without fill in the prompt each time

I'm very thankful for any reply