so i ordered from tfsupplements and i put my address on there but forgot to put the apartment number...will they send it to the main office of the apt building? or what will happen i wonderin if anyone had this same issue one time or another and can help me out to what i can do

I would try to contact them and tell them the situation. They will understand and should resend to the correct address. Good luck bro!

what they will probobly do is stick a postal sticker with your name on it on the front entrence and you'll have to go to the nearest postal office to pick it up

Rex

The main thin is to manage picking it up as soon as it gets delivered, otherwise they will send it back and you won't get it.
in such case the vendor is not obliged as the fault is on your side.
they will not receive the package back as there is written a fake sender address.
Good luck!