We report measurements of branching fractions ($mathcal B$) and direct ${it
CP}$-violating asymmetries ($mathcal A_{it CP}$) for the decays $B^+ o
K^+pi^0$ and $B^+ o pi^+pi^0$ reconstructed with the Belle II detector in
a sample of asymmetric-energy electron-positron collisions at the
$Upsilon(4S)$ resonance corresponding to 62.8 $ ext{fb}^{-1}$ of integrated
luminosity. The results are $mathcal{B}(B^+ o K^+pi^0) = [11.9
^{+1.1}_{-1.0} (
m stat)pm 1.6(
m syst)] imes 10^{-6}$, $mathcal{B}(B^+
o pi^+pi^0) = [5.5 ^{+1.0}_{-0.9} (
m stat)pm 0.7(
m syst)] imes
10^{-6}$, $mathcal A_{it CP}(B^+ o K^+pi^0) = -0.09 pm 0.09 (
m stat)pm
0.03(
m syst)$, and $mathcal A_{it CP}(B^+ o pi^+pi^0) = -0.04 pm 0.17
(
m stat)pm 0.06(
m syst)$. The results are consistent with previous
measurements and show a detector performance comparable with early Belle
performance.
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