You get 1 point up to 49 (then 2, etc...). It just gets no ALGs. Most non major/minors are not reflected in your lol bar, but in some cases (CB with Str as non major/minor but still has Tackling bar) it has a significant impact on a lol bar. Depends upon position / archetype / attribute.
If you raise those attribute by train, yes you will gain extra EL. If you raise it by putting SP in, nothing change in your EL, because EL already count your SP in.