Hello everyone I'm new to MikroTik and would like to setup a point to point between two RBDiscG-5acD, what is the best way to do this? How should i align the AP's is there an alignment tool do both APs need to be in certain modes?

The quickest and easiest is to use quick-set (PTP Bridge AP & PTP Bridge CPE modes) and once installed align both sides at the same time (requires two people communicating with each other). If you have visual with the other end you can visually aim roughly and then fine-tune