Is there any way to print or share the "Primary Load Inputs" screen?

The easiest way to share your inputs is to email your .hmr file.

If you would rather send only your load inputs, the best way to do that is
with an XML file. In the Primary Load Inputs window, choose Export XML from
the File menu. Then email the file.  The recipient can import it by
choosing Import XML from the same menu. That XML file contains all your
inputs from that window. (This same capability exists for every input
window in HOMER.)

If your recipient does not have HOMER, you can instead send a text file
containing your hourly load data. You can create such a file using the
Export button in the Primary Load Inputs window. The recipient can plot that
file in a spreadsheet.