Are there any rules regarding Force move on stationary objects such as ripping trees up or pulling a structure down on an enemy or ripping a turret apart?

If not how would people suggest the rules be governed?

Well the Pull upgrade says you can rip things out of secure mountings...

That sounds like the Narative effect, using Magnitude and Strength upgrades. If it's targeting something or someone important to the story then making the Force check a combined skill check and using Triumph and advantage would work as well.

This system is best when you are quite simple with your description of actions before you roll, but get flamboyant and descriptive with the results after the roll.

Eg.

Player: "I'm going to use Move to disrupt and hopefully stop those 2 groups of Storm Troopers that have just ambushed us and are in the trees"

GM: "Ok I'm going to ask you to make a combined check, your discipline vs their coordination as they try to get out of the way"

Player(assembles dice and rolls): "cool, get 1 success, 2 advantage and a Triumph, with 2 LightSide pips and 1 dark. I would like to activate strength and magnitude with my LightSide, and suffer the strain and conflict to also activate range to actually effect them. I pull trees up and throw them at both groups, the advantage forces 1 group to suffer setback to their next attack. the Triumph drives the others from cover giving the next PC an upgrade to their check"

True although the pull upgrade would likely be required as well. It does say it is the upgrade that allows you to pull things out of secure mountings. Roots seem like secure mountings to me. A turret is likely a secure mounting as well...Just sayin.

Agree with Daeglan.

While the exact wording of the Control Upgrade to pull objects lends itself more to hand-held weapons and manufactured items that have been bolted/welded/fastened to a wall/floor, pulling up a rooted tree is will within the realm of what can be done with Move, provided you have acquired the necessary upgrades (which seems to be a running theme with all the Force powers that FFG has published to date).

Your right Daeglan, that upgrade would be needed too, I was thinking more about the flow of a turn and didn't think that through. The example would be better without a magnitude upgrade but instead the Control update to dislodge the tree being thrown.

Sometimes, narratively pulling something apart takes more than one round. If you wanted to make the object particularly tough or take longer (very large trees, durasteel moorings, etc) you could use the Sunder rules, e.g.: Discipline vs "hardness" as a difficulty pool. Success damages one step, and 2 advantages can damage a further step. It takes four steps total to rip the object free, so if it doesn't come free in one turn you could either require a re-roll of the Force dice each turn, or a Commit to keep it going.