Don't trash it!,,,It's worth something as parts even in non-operating condition w/o a stock and mag tube. Probably $50 in the condition you describe.
Taking it apart and selling it piece by piece will get you more $$ (usually) but can take a while and even then leave you with a few parts left over sometimes. The frame can be a tough sell if rough outside condition and it needs to go to an FFL if sent out of state.
It's a project gun for someone,,as Wundudnee says it'll cost about $150 for a stock and an inner mag tube. If that's all it needs to get it up an shooting, that's pretty cheap for a 1906 shooter.
You can check the feeding firing and ejection first before buying anything by just pushing a few rounds down the outer mag tube.
On top of the few rounds down the tube slide a loose fitting but heavier length of steel or brass rod. The latter to give the ammo string some weight for the next exercise.
Tip the rifle skyward to mimic some spring pressure for feeding and see if they feed when the action is functioned.
See if they feed, fire and eject OK.
If anything else is wrong it'll become apparent.
The carrier spring breaks on the 90/06 frequently and not lifting the fresh cartridge up for feeding, The firing pin lock sometimes peens over deadening the pins fall (misfires). Broken extractors.
Corroded chambers make for poor extraction, then owners resorted to knife blades to pry the emptys out. The sometimes made the back end of the chambers oversize and show itself with blown out cases on occasion.
If it does fire, check the fired empty carefully for bulged side walls (oversized chamber... could be a number of reasons why) and the base for the same (excess headspace)
Just check it over good before dumping any money into it. Like an old house or car,,they can get expensive in a hurry to bring up to usable condition especially if you have to pay someone to fix it..