Will So2 dissolve in water

What is 'So2' ?

If you mean 'SO2'. , which is sulphur dioxide, then it dissolves in water to form sulphurous acid.

SO2 + H2O = H2SO3

NB Note the formula and the4 different spelling. This is NOT Sulphuric Acid .

NNB When writing chemical formulae. Single letter elemental symbols are ALWAYS a CAPITAL letter.

Hence

sulphur is 'S'

Oxygen is 'O; ; NOT 'o'.