#1
okay im pretty new to guitar and i only know the basic minor and major scales and i want to solo over this riff but i have no idea what scale to use
the riff:

e
b
g
d
a-4---5---------4----5---------7---6---------7----6-------
e-2-0-3-0-0-0-2-0-3-0-0-0-5-0-4-0-0-0-5-0-4-0-0-0 (repeat)

thanks for the help
#2
the Ab5 doesn`t fit into the progression in terms of playing just one modal scale, you`d probally be better using Em blues.
#7
then the A and E don`t fit, the note that`s killing the use of a scale over this progression is as i said the Ab, it just doesn`t fit 1 scale and would need to be broken in 2 scales with a key change or maybe use triads