Haven't reached a dragon yet but it would be insane dumb if u went against a red dragon (the strongest of chromatic dragons) at level 4. Or even at level 10
You are not supposed to fight it, It's just there to look intimidating and then fly away after a cutscene unless the player attacks first.
The problem is that it's hard to take seriously the fact that the game labels him as a level 4 creature.
Then again if you target the red dragon in the prologue he's labeled as a level 1 creature, so it could be worse for the former, I guess.