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Parts for Frigidaire GLES389FSB Range - AppliancePartsPros.com
See the attachment for the wiring diagram.
I am assuming that the oven works OK.
Unplug the unit and check the wiring to the element controls and from them to the terminal strip.
If all OK I would disconnect the right front element and see if the other elements now work.
If that does nothing disconnect the control/board for that element.
Be very careful that the unit is unplugged when working on it and that nothingcan short out when you are testing it.
This is a fairly complicated unit and may be best left to a pro.
A manual is available for purchase at the following site but is for stand alone units not a slide in unit. The sections on the element controls is the same though.