Can I pull up files from my Mac on my iPhone?

Look into using iCloud Drive.

Access and manage your files in iCloud Drive - Apple Support

Add your Desktop and Documents files to iCloud Drive - Apple Support

Maybe.

If you are signed in to the same iCloud account on your Mac and iPhone,

and

If you use iCloud Drive and sync Desktop and Documents folders to it form your Mac, you can access files there on an iPhone through the Files app.

If you don't have that option turned on, then you would need manual copy files to a folder on iCloud Drive, and then the iPhone would be able to see and access said files.

click here ➡️ Add your Desktop and Documents files to iCloud Drive - Apple Support