Do i need to install VS ?

I going to install UR 4.10, but before that do i need to install VS 2015 ?
I will use only the Blueprint.

Unless you are downloading the UE4 source so that you can code in C++ then no

Now i’m installing UE 4.10 and i hope there is no errors will pop up.
Thank you so much.

No you don’t need it.