Please try the following:

1) Open a new terminal window and run the bash shell as,

$ arch -arm64 /bin/bash

2) set FS_LICENSE to point to your license.txt file. Say it is in your home directory, e.g., $HOME/license.txt. It can be anywhere but you just have to set FS_LICENSE to its absolute path and test it can be read.

$ ls $HOME/license.txt

/Users/<your userid>/license.txt

$ export FS_LICENSE=$HOME/license.txt

$ head -1 $FS_LICENSE

you@youremail.something <— email you used to register with

3) setup the environment

$ export FREESURFER_HOME=/Applications/freesurfer/7.3.2

$ source $FREESURFER_HOME/SetUpFreeSurfer.sh

-------- freesurfer-darwin-macOS-7.3.2-20220803-878457d --------
Setting up environment for FreeSurfer/FS-FAST (and FSL)
FREESURFER_HOME   /Applications/freesurfer/7.3.2
FSFAST_HOME     /Applications/freesurfer/7.3.2/fsfast
FSF_OUTPUT_FORMAT nii.gz
SUBJECTS_DIR   /Applications/freesurfer/7.3.2/subjects
MNI_DIR     /Applications/freesurfer/7.3.2/mni

4) Try running freeview w/o any arguments to see if it opens an empty window.

$ freeview

5) If that worked, quit freeview and then try running freeview to open one of the provided volumes in the 7.3.2 release,

$ freeview $SUBJECTS_DIR/bert/mri/brain.mgz

5) If that worked, then try running freeview on your file again.

- R.