I think I have what is called smegma irritation on my clitoral hood? It's red and sore to touch, no sores lesions how to cure?

See answer. Good hygiene and wash with mild non-allergenic soap and water and avoiding any potential chemical irritants (spermicidals, lubricants, fragrances, colored or scented tissue paper, etc) is generally all that is needed. Can also apply short-term a topical over-the-counter 1% Hydrocortisone cream twice a day.