Your Charisma modifier (+2) added to your Proficiency bonus (+2 at first level) equals your overall Persuasion skill, because it's a Charisma based skill, and you're proficient in it. That's why it says +4 on your character sheet.
If you didn't have proficiency in it, you wouldn't add your proficiency bonus, so it'd just be +2, for your Charisma modifier.
You'll notice on your character sheet, every skill has the attribute that governs it. Athletics for example is a Strength skill. So you'd add your Strength modifier. If you were proficient in Athletics, you'd also add your proficiency bonus.
trying to learn as a gamemaster and i wanted to know
if a character rolls a d20 for persuasion
his persuasion skill is +4 but his charisma is +2
which one do i take as a modifier?
i searched in the basic rules book but i had a hard time finding an answer
thanks in advance guys
If you, as a Dungeon Master, deem Persuasion applicable to the check, then the player can add +4.
If you think it is better fitting a generic Charisma check, then the player uses the +2 bonus only.
So there's a couple of things going on here.
Your Charisma modifier (+2) added to your Proficiency bonus (+2 at first level) equals your overall Persuasion skill, because it's a Charisma based skill, and you're proficient in it. That's why it says +4 on your character sheet.
If you didn't have proficiency in it, you wouldn't add your proficiency bonus, so it'd just be +2, for your Charisma modifier.
You'll notice on your character sheet, every skill has the attribute that governs it. Athletics for example is a Strength skill. So you'd add your Strength modifier. If you were proficient in Athletics, you'd also add your proficiency bonus.
Hope that helps.
ok guys makes sense thanks a lot for your answers :)