Yes, em is in the scrabble dictionary

...and is worth 5 points by itself.

find more words you can make below

Em Definition

noun

Printing Such a measure for 12-point type; a pica.
from The American Heritage Dictionary of the English Language, 4th Edition
Printing The width of a square or nearly square piece of type, used as a unit of measure for matter set in that size of type.
from The American Heritage Dictionary of the English Language, 4th Edition
The letter m.
from The American Heritage Dictionary of the English Language, 4th Edition
A unit for measuring the width of printed matter, equal to the height of the type size being used.
from Free Scrabble Dictionary
The letter.
from Free Scrabble Dictionary

abbreviation

Electromagnetic.
from Free Scrabble Dictionary
Electron microscope; electron microscopy.
from Free Scrabble Dictionary
End matched.
from Free Scrabble Dictionary
Engineer of mines.
from Free Scrabble Dictionary
Enlisted man.
from Free Scrabble Dictionary

Find More Words!

Wildcard(?) letters appear in RED

Here are some other words you could make with the letters EM, you can also
use this lookup tool to help you find words with our scrabble word finder.

Top Words by points

Points

em

4

2 letter words with EM

Points

em

4

me

4

Found 2 words in 0.10822 seconds