What Is The Formula And Chemical Name Of A Compound Containing Helium?

Helium is inert.  It  doesn't like to form chemical compounds.  It can become an isotope, of which He-3 and He-4 are stable and exist in the atmosphere.

Here is what wikipedia says about unstable Helium compounds
See en.wikipedia.org

Helium is chemically unreactive under all normal conditions

Helium can form unstable compounds such as HeNe, HgHe₁₀, WHe₂ and ions He₂⁺, He₂²⁺, HeH⁺, and HeD⁺ and HgHe, but only you only find those in lab type conditions.

So unless you're answering this for an advanced college class, the answer is...  there are no stable compounds!

 helium cannot form a compound , it is a noble gas

He2

Water is a chemical compound containing two hydrogen atoms and one oxygen atom in each molecule.  The chemical symbol is H₂O, and its chemical name is hydorgen oxid.
 
UPDATE:  Yes.  I messed up on this one.  I read the question too quickly, and did not check myself.  Nic7320 is correct.