I am a queer guy and I have a crush on one of my friends who is a lesbian. Should I tell her how I feel? I don't want things to get awkward or make her feel umcomfortable

It all depends on how you feel. If you feel like you need to get this off your chest, if you think you'll feel better after telling her, then it's your right to tell her how you feel. You both should feel comfortable in order for your relationship to work, and if telling her would make you feel better, you can do it. Otherwise, if and only if you are sure that telling her won't make a difference, you can consider keeping it for yourself.