Is there any benefits my dad could get if or when he comes out of hospital to help him out I can't support him with money 

Attendance allowance. Lower rate and higher rate. Age concern filled in the application with me.

thats a start, there are other benefits that might apply.

Depends on his age

It will depend on his age. Like Colin, I get Attendance Allowance, being over 65. I was helped to apply by someone from The Stroke Association.