It is my first kneecap dislocation, after 10 days of brace period, after mri , doc. told me to walk , is it safe? i have swell in my kneecap area

Follow advice: The MRI can show torn ligaments. Complete tears are rare in dislocation. I assume you are seeing an ortho/sports doc. They would definitely know the best treatment for you over anyone on internet that hasn't seen you! swelling will persist for a while. Although it may be scary to take the brace off, risks of keeping it on too long include muscle atrophy and weakness, as well as decreasing bone.