what discharge do they give you if you failure to adapt to your work in the army?

It's based upon the recommendation of your commander, that's why you won't find an answer online.

Your commander is handed a memo that says "I recommend this discharge" and then circles the one they recommend.

If this is for you and you're a 42A, just show up and do your job. It's really not that difficult to show up and work a 9-5 admin job, not much harder than working a civilian office job

There are other factors that need consideration. It is not a specific discharge. Typically, general or could be unspecified if TIS isn't met.

Not a good one. What's good? Depends upon the relativity of your failure to adapt.