Hola, not too many oil palmies on here π
With 50 trees, you might not be able to produce your own oil, as that typically requires a mill. Most likely, you'll be selling your fresh fruit bunches (FFB) instead.
Based on current prices (around 6.5 THB/kg) and the volume your trees will yield, you should make some income, though it might not be a huge amount.
It's also good to keep in mind a few costs like fertilizer, hiring help for weeding (maybe once a month), transportation expenses etc. As some of these expenses will start soon after planting and your trees will only start to yield after 3 to 5 years, it's worth planning for them.
Hope this helps, and good luck with your palm oil venture. π΄πͺ