For some reason every time i get slapped it takes away 50 hp no matter what setting i use.

I provided both the config for slap and for get slapped to make it easier for you

{
  "Command cooldown in seconds (0 to disable)": 0,
  "Default damage per slap": 5,
  "Default intensity per slap": 5,
  "Default amount of slaps": 1,
  "Show players who slapped them": true
}

 

{
  "Banned word, slap force (30 = 30% of health)": {
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0,
    "word": 10.0
  }
}

You have the configured intensity at 5, and the force value per word at 10. 

10 * 5 = 50

You can either lower the intensity in the Slap plugin config, or lower the force value in the Get Slapped plugin config.

Ahh, now it makes sense :)