is it edible?
Yes, it is used to produce maple syrup.
Acer rubrum
Red maple is also used for the production of maple syrup, though the hard maples "Acer saccharum" (sugar maple) and "Acer nigrum" (black maple) are more commonly utilized. 
the red maple is also known as acer rubrum. its scientific name is Yes, the scientific name of red maple is Acer rubrum. is it a tree? Yes, a medium to large sized tree. where is its found? In eastern North America. how big does it grow? It is a medium to large sized tree. is this tree only found in america? No, it is also cultivated in United Kingdom. do you know in which states in america? Nova Scotia, Minnesota, Wisconsin , Illinois, Missouri and others. and in the u.k.? UNANSWERABLE describe its leaves? They are typically long and wide with 3-5 palmate lobes with a serrated margin. The sinuses are typically narrow, but the leaves can exhibit considerable variation. When five lobes are present, the three at the terminal end are larger than the other two near the base.
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Acer rubrum [SEP] Other uses
Native Americans used red maple bark as a wash for inflamed eyes and cataracts, and as a remedy for hives and muscular aches. They also would brew tea from the inner bark to treat coughs and diarrhea. Pioneers made cinnamon-brown and black dyes from a bark extract, and iron sulphate could be added to the tannin from red maple bark in order to make ink.