More insight is available from Are Spell-Like Abilities Actually Spells?, but
The elemental bloodline special ability elemental ray says
Elemental Ray (Sp): Starting at 1st level, you can unleash an elemental ray as a standard action, targeting any foe within 30 feet as a ranged touch attack. This ray deals 1d6 points of damage of your energy type + 1 for every two sorcerer levels you possess. You can use this ability a number of times per day equal to 3 + your Charisma modifier.
Although it's a spell-like ability, the elemental ray special ability isn't a spell and using it isn't casting a spell. The orc you describe inflicts 1d6+1 points of fire damage with it.
How to compute the spell level of this spell-like ability is covered by the FAQ; in fact, the FAQ supplies several rulings about spell-like abilities, and a consistent user of spell-like abilities should make himself aware of these rulings.
An examination of each mentioned special ability
Just to clarify, the orc bloodline sorcerer arcana says that
Whenever you cast a spell that deals damage, that spell deals +1 point of damage per die rolled.
The wildblooded archetype's primal elemental bloodline sorcerer arcana says that
Whenever you cast a spell with an energy descriptor that matches your elemental bloodline’s energy type, that spell deals +1 point of damage per die rolled.
And, finally, the orc sorcerer favored class ability says that
Add +1/2 point of fire damage to sorcerer spells cast that deal fire damage.
Emphasis in all cases mine. I suggest casting burning hands until you can cast scorching ray.
In Oct. 2013 the FAQ clarified that the sorcerer archetypes crossblooded and wildblooded can't be combined. This thread debates that ruling.