The double bond doesn't automatically indicate sp. For eg, NO3- has a double bond and it's sp2.
As a guide,  any atom with exactly two "groups" (a group is a lone pair of electrons or a bond regardless of bond order ie single double or triple) is sp hybridized. An atom with three groups is sp2 hybridized; one with four groups is sp3 hybridized.
So the end N has a one double bond (1 group) and 2 lone pairs (2 groups). Total is 3 groups, so sp2.

I have a structure set up that is H2C=N=N with two pairs of electrons.

Perhaps I'll describe H₂C=N=N in terms of the number of electrons on each atom in the molecule.

Each H contain only a bonding pair (C-H) each.

The C atom contains 4 bonding pairs.

The N attach to C has 4 valence electron. It has donated its 5th electron to the other N atom and inherit a positive charge on it. It exhibits a valency of 4, thus contains 4 bonding pairs.

The last N has 6 valence electrons. It accepted it 6th electron from the othe N atom, thus inherit a negative charge. It exhibits a valency of 2, thus forming double bond with the N atom.

Thank you all so much for your replies!      It makes a lot more sense now, and I really appreciate your *delete me*!!  Thanks again!!!!