In F2 use the formula
=VLOOKUP(E2,$A$2:$B$91,2,FALSE)
or better still use
=VLOOKUP(E2,A:B,2,FALSE)
and copy the formula down...
As shown by you the range A2:B91 changes to A3:B92 when copied down, since you are not using the $ to indicate you do not want to change the lookup data range...
If this does not work then copy any value in Col A and paste it in E3... if you get the correct result in F3 then it means there is some difference in what you have in Col A and what you have in Col E.