Are there specific Torah texts or mitzvot I should study as a tikkun for disrespecting a Talmid Chacham?

Listen, you're asking a very serious question because disrespecting a Talmid Chacham is one of the most severe sins a person can commit. The Gemara in Masechet Shabbat says clearly that anyone who disrespects a Talmid Chacham, there is no cure for his ailment. This is not something to take lightly. Now, what can you do as a tikkun? First and foremost, you need to understand that no amount of saying "I'm sorry" is enough on its own. If you offended a Talmid Chacham, you have to say "I'm sorry" for the rest of your life until they forgive you. You need to go to them and ask for mechilah - forgiveness. Do whatever you can to get their forgiveness. Keep trying even if they have fire in them and don't want to forgive you easily. Why? Because you hurt one of Hashem's soldiers, and you have a very serious problem. As far as what to learn specifically, you need to immerse yourself in understanding what a Talmid Chacham actually is and why their honor is so critical. Study the Mishnah in Pirkei Avot, especially chapter 4, Mishnah 12, which teaches that you must have as much fear of your rabbi as you have fear of Heaven. Learn the sources in Yoreh De'ah, Siman 243, which details all the laws of how to treat Chachamim. Go through these halachot and understand what you violated. You should also study extensively about Kavod HaTorah - the honor of Torah. Learn the Gemara in Masechet Megillah, daf 29a, which teaches that honoring the Torah and those who embody it is even greater than Talmud Torah itself. Study the section in the Shulchan Aruch, Yoreh De'ah, Siman 242 and 243, which goes through the entire subject of respecting Torah scholars. Beyond this, you need to work on eliminating your gaavah, your arrogance. Disrespect to the sages doesn't come from knowledge - it comes from ignorance combined with arrogance. Study Mussar works that deal with humility and understanding your place. Learn about how the greatest Chachamim throughout history treated each other with respect, even when they disagreed. But let me be very clear with you - all of this learning is secondary to actually getting forgiveness from the person you wronged. If you don't get their mechilah, you're in serious trouble in Shamayim. The learning is part of your teshuvah process, but it cannot replace asking forgiveness directly.