secure boot not workinng

Hey i just installed valorant and it was saying this version of vanguard requires secure boot to be enabled so i did some research and it was saying to go to the bios and turn on secure boot , at first it was giving me trouble to enable it then i clicked key management and createf a platform key after that it enabled now i cant exit bios it is saying secure boot violation Please someone help me it isnt letting me use my laptop I have a asus vivobook laptop