Which degree will be more helpful if you're planning on potentially becoming a college counselor: Human Services or Forensic Psychology?

What do you mean by "college counselor?"  Do you mean a guidance counselor/academic advisor who work in a high school or privately to help students prepare for and select the college/universities they apply to? Do you mean a psychologist who works for a university to provide mental health services to college students?  

Neither of your choices makes sense if you want to counsel people. There are degrees in education, and psychology (general) that are more applicable to getting into a graduate program for counseling.  

Undergraduate in psychology and then a  Master's; thereafter, a license in MFCC or a PhD in clinical psychology. 

The regular respondents on this board have generally all been to college, and some are professors as well.  Yet, no one is familiar with a position called "college counselor."  Asking the same question repeatedly will not make such a position real.  Planning to study for a non-existent job is extremely unwise.  

Not forensic psychology.  That has nothing to do with being a college counselor.  

What type of counselor do you mean?  Colleges don't have "guidance counselors" per se like primary and secondary schools do.  They have advisors, student support specialists, etc.  Some of them have a master's degree in counseling.  Some have degrees in other areas.  If you want to be a mental health counselor at a college then you will need a master's in counseling. 

As we keep telling you, we don't know what "human services" means at your school so I don't know if it would be relevant to such a career or not.  That is not a major I've encountered at any college or university with which I've been affiliated.