  We present results on the Paschen-$\alpha$ (Pa$\alpha$) emitting galaxies
observed as part of the JWST FRESCO survey in the GOODS-North and GOODS-South
fields. Utilizing the JWST NIRCam wide field slitless spectroscopy (WFSS), we
analyze emission line fluxes, star formation rates (SFRs), and spatially
resolved flux distributions of 97 Pa$\alpha$ emitters at $1<z<1.6$. To assess
dust extinction within our sample, we combine Pa$\alpha$ fluxes with archival
H$\alpha$ data taken with the Hubble Space Telescope (HST) WFC3 G141 grism. Our
analysis reveals a significant correlation between dust extinction and galaxy
stellar mass, where more massive galaxies exhibit greater dust extinction. We
employ two-dimensional Pa$\alpha$ and F444W mapping to trace the distributions
of star formation and stellar mass, respectively. Our observations indicate
that lower mass galaxies are almost dust free in Pa$\alpha$ and exhibit smaller
sizes both in star formation and underlying stellar continuum. In contrast,
galaxies with a stellar mass greater than $10^{9.5}M_\odot$ display diverse
dust extinction and star formation patterns. This variation suggests that the
structures and properties of massive galaxies evolve through different phases,
which involve, e.g., star formation in massive clumps, compaction, and
inside-out quenching. This study demonstrates the capabilities of JWST WFSS in
conducting systematic investigations of emission line galaxies and highlights
the pivotal role of Pa$\alpha$ in advancing our understanding of dust
extinction and obscured star formation in the early universe.
