Well--worker compensation is not taxable so no tax has been withheld from it. You do not even enter it on a tax return. If you have had any other source(s) of income with tax withheld then you might be able to get a tax refund. Did you receive the 1st stimulus check? If not then we can tell you how to go about filing a 2020 return for the recovery rebate credit to get the 1st and 2nd stimulus checks.
I just re-read your question--- it sounds like you worked for part of the year--so that suggests you will receive a W- 2 from your employer for the wages earned before your injury. So you will be able to enter that W-2 on a 2020 return. Depending on the amount of tax withheld and the other variables like your filing status, dependents, credits you are eligible for, etc. you could receive a tax refund.