Go read the aircrack-ng documentation.
There is plenty of info on how to do what you are trying to do.
Aircrack-ng
when i run the command
Airodump-ng to gather the data to cack a wep the data number doesnt increase and all the powers are at 0.
now ive tried moving closer to the modem that im attacking and nothing the power stays at zero and so do the number of data. what do i do.
Go read the aircrack-ng documentation.
There is plenty of info on how to do what you are trying to do.
Aircrack-ng