Now we are progressing. You imagine that Life is the result of the sun shining on chemicals.
So the sun shines on chemicals all over the Cosmos.
Just try to focus on what I have said rather than what you imagine I said. At least two major branches of abiogenesis research are not dependent on sunshine at all.
What is the value of life forming from chemicals compared to the rest of the Cosmos where life does not form.
That's not a particularly meaningful question. Firstly, we don't even know whether or not there is life on our nearest planet, let alone the rest of the solar system, or the galaxy, or the greater cosmos.
Secondly, value is a subjective human judgement - what you consider to be the value of life here or elsewhere in the cosmos is up to you.
Why is life a chemical result of sunshine?
It may well not be the result of sunshine (as above). But, given suitable conditions and free energy (e.g. sunshine), complex chemical reactions occur, dissipating the energy most effectively. Roughly, the larger the energy gradient (up to a point), the greater the reaction barriers that can be overcome and the more reactions are possible. Life is a persistent complex chain of organic reactions, an organised and structured form of combustion.
How do the chemicals benefit from evolving into lifeforms?
Again, benefit is a subjective human judgement - does a pebble benefit from being on a beach? does rain drop benefit from falling in a puddle? what do you mean by 'benefit' in respect of chemicals?
What physical property is life fulfilling?
In physical terms, life tends to maximise the overall increase in entropy by being an extremely efficient way of dissipating energy.
If you want more specific or detailed answers you need to ask more specific or detailed questions.