Craft on WSL permissions error
This worked well for me!
Be sure to change directory out of the drive you want to unmount first!
Just to keep it all together here is what you need to do -

sudo nano /etc/wsl.conf

Paste this into the open file -
[automount]
enabled=true
options=metadata,uid=1000,gid=1000,umask=022

Then paste and enter these one at a time into Terminal -

sudo rm /your_craft_path_to/cpresources
cd /var/www
sudo umount /mnt/c
sudo mount -t drvfs C: /mnt/c -o metadata
sudo service apache2 restart

Head to your Craft URL and et voila!