Question:
What is the ruling on celebrating or sending good wishes in new year of lunar calendar?

Answer:

Alhamdulillah, the Islamic calendar reminds us of our connection to our
Islamic history and identity. The Ulema did not reject the concept of
remembering the Islamic new year, but at the same time it is not
reported from the pious predecessors that they exchanged greetings on
this date. The preferred opinion is that one should return the
greetings of others on the Islamic New Year, but it is not legislated
to initiate such greetings since this ritual is not based on evidence.

Allah knows best.