Today? Hellenic Polytheistic Reconstructionism or Hellenism.
If you mean worship, yes, ancient people worshiped Apollo.
cause they needed help
Yes, people who worship Satan are called Satanist.
Jewish people don't worship buildings, they worship God. They do however worship IN buildings called Synogogues.
There are many different people who worship in many different places. Many Christians for example choose to worship in a church.
Project Apollo, also called the Apollo Program.
Obviously they offered worship and sacrifices to the God. What else is a temple for? And btw, there were many temples to Apóllōn.
The Shinto people worship at public shrines or worship at small home shrines called "kamidana".
The place of worship for Muslims is called the Masjid or Mosques
they worship there leaders at home and in temples called Mandhris
The belief in Apollo as a god dates back to ancient Greek civilization, which began around the 9th century BCE. Apollo was one of the major deities in the Greek pantheon and was associated with various attributes such as music, healing, prophecy, and light. The worship of Apollo continued throughout the Hellenistic period and beyond.
the people that lead the faithful in worship in Hinduism are called saints or pujari. Some people also call them gurus or baba.