I have had to give up my job due to ill health but have been refused PIP. Can I get sick payment benefit and for how long? I have a doctors unfit for work note?

If youre in the states, you can apply for Social Security Disability if you have been out of work for at least 1 year due to this illness or if DRs expect you to be out for more than a year to come. It isn't much but at least its something so check with SSI website s you have nothing to lose here. Good luck