Sheikh, what are the etiquettes and virtues of Salat Al Tawbah, and how is it performed.

You make wudu and do it well, pray two rakahs, and nothing particular is prescribed to be recited in them. The repentance itself is not tied to this prayer: it is regret over what passed, leaving the sin, a firm resolve not to return to it, and returning people's rights to them if the sin was against a person.