You cannot know your gotra just from the name of your kuldevi.

“Varai Maa” (Maa Varai) can be the kuldevi of many different vansh / jati / families, and each of those families can have different gotras. So:

• One kuldevi = many possible gotras
• Gotra is decided by your pita‑vansh (father’s family line), not by the kuldevi’s name

To know your real gotra, you should:

1. Ask your parents, grandparents, or elder relatives
2. If your family has any old patra, genealogy book, or community record, check there
3. If you belong to a Jain sangh/samaj, sometimes the local sangh elders or community register will also have this information

From Jain dharma point of view, social gotra (like caste gotra) is not spiritually important; what truly matters is samyak darshan, samyak gyan, and samyak charitra. But for marriage or community identity, only your family can correctly tell you your gotra.