In the early game of Palworld, you can set up an efficient way of farming EXP through autonomous arrow production.
Quickly Level Up Your Base Pals by Crafting Arrows
Arrows take about 1.5 seconds to produce for a Pal with Handiwork Level 2 (i.e. Robinquill) at a High Quality Workbench, and produce 2 EXP for the Player and each Pal (on Normal, but varies by your Difficulty Settings) each time.
While exploring, you can expect the following EXP results above from your base setup. These results assume you are at Base Level 10, with 10 Pals available to work at the base. This method is still possible with a lower Base level, but the results will be lower accordingly.