Yes, you can claim Personal Independence Payment (PIP) while unemployed, because it is not based on your income, savings or employment status. You must have a long-term physical or mental health condition or disability that affects daily living or mobility, usually for at least three months and expected to continue for at least nine more months. PIP is assessed on how your condition affects you, rather than on whether you have a job. Check the latest eligibility guidance on GOV.UK, and remember that Universal Credit or other support has separate rules.