This did not change much between Pathfinder 1st Edition and Pathfinder 2nd Edition. The primary skill for persuasion is Diplomacy. One can also persuade with lies, which would be Deception, or scare a person into cooperating, which would be Intimidation.
The diplomatic technique is described on page 150 of the Playtest Rulebook, under the Diplomacy actions. First, if the NPC that the PC is trying to persuade has an uncooperative attitude, either hostile, unfriendly, or indifferent, then use the Make an Impression action to improve the NPC's attitude to friendly. Then with a friendly or helpful NPC, use the Request action to persuade them to do something for the PC.
If the persuasion is not a request but an attempt to change a belief, I would use the Make an Impression action for that.
Seduction is accomplished through roleplaying rather than actions. Flirt with the character. Use Make an Impression of you want a skill check.
It should also be possible to pay an indifferent person to cooperate, but that is not a roll. I would use another Diplomacy action, Gather Information, to find someone willing to go along with a plan for money or some other favor.
My players love persuading unfriendly NPCs, so I created several shortcuts as houserules in PF1 that I will probably import to PF2. But those are only houserules.