If you mean “Who is the next Tirthankar?”:

• In our Bharat Kshetra (this part of the universe) there will be no more Tirthankars in the present time-cycle (Avasarpini). The 24th and last here was Bhagwan Mahavira.
• The living “current” Tirthankar whom Jains revere is Shri Simandhar Swami, who is presently preaching in Mahavideh Kshetra. We cannot meet him from here, but souls reborn there can take his samavasaran-darshan and attain liberation.

Tradition notes

• Both Digambar and Shwetambar agree: no more Tirthankars will arise in Bharat Kshetra in the remaining part of this era.
• Simandhar Swami’s present existence in Mahavideh Kshetra is acknowledged in both traditions; his active worship is especially common among many Shwetambar groups.

For a simple overview:

• Simandhar Swami explained
• Time-cycle (why no Tirthankars now in Bharat)