According to the git hub issue related to this, the way to go about doing this is to create a read-only input and format it to look like the normal text elements:
https://github.com/PySimpleGUI/PySimpleGUI/issues/2928
import PySimpleGUI as sg
sg.theme('Dark Red')
layout = [ [sg.Text('My Window')],
[sg.InputText('You can select this text', use_readonly_for_disable=True, disabled=True, key='-IN-')],
[sg.Button('Go'), sg.Button('Exit')] ]
window = sg.Window('Window Title', layout, finalize=True)
window['-IN-'].Widget.config(readonlybackground=sg.theme_background_color())
window['-IN-'].Widget.config(borderwidth=0)
while True: # Event Loop
event, values = window.read()
print(event, values)
if event == sg.WIN_CLOSED or event == 'Exit':
break
window.close()