Front Drive shaft leaking?
 

is this a big problem? lol i honestly am clueless about this but here is a picture.

i was outside cleaning up my car and making sure everything was okay on it and this is what i came across

it is your pinion seal. Pretty easy fix. pull the yoke off and replace the seal, torque yoke back on

where can i get a seal?

any auto parts store. it is the outer pinion seal on a dana 30

Here are the basics to it: writeup

A few searches will get you all the info you need to do it.