What are the guidelines for transferring my felony probation from Fla. To Las Vegas, NV to live with my fiancée?

You make written application though your PO.

Are you current in any payments required though probation?
Are there any outstanding programs you need to complete?
Does the person you are to live with have any criminal record?
Were they a victim in any of your crime ( domestic violence issue?)
Is there any issue with location of place you are moving.

Do you have a job arranged there ?

The state you wish to go to, has to accept, the state leaving has to accept, it can be 30 to even 90 days to get permission to move.