It is a simple scarf that combines brioche stitch and eyelets.
Although right and wrong side are not identical, both look nice, which is important for a scarf.
You need to know brioche stitch.
Gauge is not critical; pick up needles that give you a nice fabric. Note that your gauge may affect the size. You can make a larger or a smaller shawl. The fabric with eyelets grows in the length after blocking some 40-45 cm.