Lost all gears and reverse all at once suddenly. No warning

What is your question?

2001 dodge ram 1500 quad 5.9 magnum v8 4x4(front driveshaft is not installed though)46re transmission. Was backing up to turn around and all of a sudden with no warning or anything it just stopped moving tried putting it in drive and nothing same with 2 and 1 gears. It's an automatic also. It starts right up and runs fine just won't move at all. It's like it doesn't even kick into gear when shifting the gear shifter. Checked linkage looked fine. Fluid level is good and doesn't smell burnt. I'm a woman WI next to no experience and basically have 2 $23 to my name. Help.

What makes this problem better or worse?

Not sure it all happened suddenly with no warning signs.

How long has your 2001 Dodge Ram 1500 had this problem?

Let's see its happened about a month ago and is still sitting where it stopped moving at.