They are usually shown as a four digit number on the vehicle, such as LA7W. It is possible that there can be a two digit code instead of or in addition to the four digit code, such as 8E. Either code is correct.
The most likely spots for Volkswagen paint code sticker are:
The paint code is printed on the vehicle data sticker, which is usually on the inside cover of the vehicle service book;
There is also a data sticker located on the boot floor under the carpet/boot liner.