How to open Terminal
Open Terminal from Applications > Utilities, or search for Terminal with Spotlight.
Command Prompt on Mac
What is Command Prompt called on Mac?
Command Prompt is closest to Terminal on Mac. Terminal is the built-in app for using the Mac command line.
Short answer: open Terminal when you are looking for Command Prompt on Mac.
Terminal gives you a shell prompt on macOS. PowerShell is separate software if you install it yourself.
What Terminal does
Terminal lets you run shell commands, use developer tools, inspect files, connect to remote systems, and automate Mac tasks from the command line.
How Callsign helps with the name mismatch
Callsign creates a visible alias named Command Prompt in a folder you choose. When you use that familiar name, it opens Terminal. The alias is a normal visible file, not a Windows command interpreter.