  We present neutron scattering measurements of the dynamic structure factor,
$S(Q,\omega)$, of amorphous solid helium confined in 47 $\AA$ pore diameter
MCM-41 at pressure 48.6 bar. At low temperature, $T$ = 0.05 K, we observe
$S(Q,\omega)$ of the confined quantum amorphous solid plus the bulk
polycrystalline solid between the MCM-41 powder grains. No liquid-like
phonon-roton modes, other sharply defined modes at low energy ($\omega<$ 1.0
meV) or modes unique to a quantum amorphous solid that might suggest superflow
are observed. Rather the $S(Q,\omega)$ of confined amorphous and bulk
polycrystalline solid appear to be very similar. At higher temperature ($T>$ 1
K), the amorphous solid in the MCM-41 pores melts to a liquid which has a broad
$S(Q,\omega)$ peaked near $\omega \simeq$ 0 characteristic of normal liquid
$^4$He under pressure. Expressions for the $S(Q,\omega)$ of amorphous and
polycrystalline solid helium are presented and compared. In previous
measurements of liquid $^4$He confined in MCM-41 at lower pressure the
intensity in the liquid roton mode decreases with increasing pressure until the
roton vanishes at the solidification pressure (38 bars), consistent with no
roton in the solid observed here.
