I hear rashes can be a symptom of covid. should i be worried if i develop a rash out of nowhere?

Not necessarily: About 20% of people with COVID 19 have a rash. COVID 19 have been reported to occur in healthy young people who are COVID positive but otherwise don't really seem to be having too much in the way of symptoms. Look for other symptoms. Symptoms of COVID 19 infection may include (but aren’t limited to) dry cough, shortness of breath, nasal congestion, fever, headache, sore throat, feeling tired,