Hey Christina,
Any or all of those, except glue, could be answers depending on the hole. If it is small enough you can iron on a patch. If it is a larger tear you can satin stitch the hole. Do not glue on a patch as it will wash and wear funny, causing more wear on the jacket. You can check out our patching guides listed below for inspiration. Any of these methods should work for a tear in fleece.
[guide|19438]
[guide|16783]
[guide|16781]
[guide|12075]
[guide|16779]
[guide|19442]
Good luck and let us know how it goes!