Well, you came to the right place... First, a couple of points:
But after all that i would like to build it Scale 1:40 I would like to build from scratch, first thing is I need some plans with station points on it if someone has 3 veiws or smaller plans. I got a set of drawings the other day of U47 but no station points on it, and my wife said why not build U505 seen I have all the photos and video on. CAN anyone HELP
I would recommend you do a "Standard" scale, probably 1/48 scale. There are a lot of small aftermarket parts and they follow "standard" scales; 1/48, 1/72, 1/96, etc. When you go to outfit your U-boat with guns, cleats, bollards antennas etc., it makes a lot of sense to be in a standard scale.
Other point is that U47 is a Type VII U boat, whereas U505 is a Type IX U Boat. These two types are very different in size and many other features. So, if you want to do 505, you will need Type IX plans.
Our resident U-boat expert is Jeff LaRue, who is also the editor of the SubCommittee Report. In addition to the niggling details, he has a wealth of knowledge on where to obtain plans & materials.