How do I help heal my tongue faster after burning it pretty bad eating soup?

Rinse your mouth . There are several mouth rinses some over the counter like act-sensitive formula, biotin, and home remedy warm salt water. There is also a prescription mouth wash "peridex' and also "therasol" rinse will help. Good luck.
Vitamin C, Aloe vera. Fortunately, burns on our tongues tend to heal rather quickly, but taking vitamin c can accelerate the healing of burns- i advise 1000 mg 3-4 times a day. Aloe vera is renowned for helping burns to heal so swishing a liquid aloe vera solution in your mouth is worth trying as well. Zinc also supports wound healing.
Burning Tongue. I recommend liquid antacids, if you want to protect your tongue from the burning sensation after hot soup. Try maalox or mylanta for a few days. The burning should stop in 3 - 7 days.