What command do I write in the terminal to check if pip is installed on my MacBook? I can't find any Mac specific commands online to check. I thought I already had it installed, but I'm not sure now.
Try running
$ pip -V
Or
$ pip3 -V
$ pip3 -version
If it prints information about pip, it's installed. If not, either it's not installed, or your environment variables are not set up properly. For the latter, I can't tell you how to fix unless I know how you tried installing it.