web.config file missing in Linux version

The windows  version of the nopCommerce download (nopCommerce_4.60.6_NoSource_win_x64.zip) contains a web.config file

The Linux version (nopCommerce_4.60.6_NoSource_linux_x64.zip) does not.

Shoud it?

The absence of a web.config file in the Linux version of nopCommerce is expected.
See the documentation
https://docs.nopcommerce.com/en/installation-and-upgrading/installing-nopcommerce/installing-on-linux.html