I have been looking for a plugin that allows a player to get a rank from the player. I don't want every rank like this only one rank. I want a president rank but if you kill the president you become the president and you get access to the presidents permissions. Any idea if there is a plugin that can do this and if so what one and how?

ive done something similar to this.
I used a clothing item like a hat that the President wears.

Once put on it announces in chat a new president has taken the hat.
If a player wearing it dies the hat will respawn at the original place a admin sets it up (typically a building you designate as the "white house")
If player dies wearing the president hat it announces in chat the president has been assasinated and the hat will respawn.

Added a few other modifications to this idea, but generally same thing you are attempting.
While my plugin is private use only i just wanted to give you a few ideas.

Thanks for the reply.

Check this little plugin out i found on umod, i think you can use this for what you want to achieve:
https://umod.org/plugins/political-survival

Pretty cool plugin