My 2007 ford explorer won't turn on and has no power what's so ever is there anything you can…

My 2007 ford explorer won't turn on and has no power what's so ever is there anything you can recommend and it won't switch back to neutral it's stuck on park
PLEASE HELP!!!!!!

check the battery and the battery cables for corrosion and looseness first. if no power goes to the igition switch, car will not come out of park

I cleaned both post still nothing but I haven't checked the ignition switch yet but can't I overide the vechial shift to move it neutral and push it to a better area to work on

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