Error in permissions to run build.sh file

good morning, could you help me with a problem I have with the build.sh file please. When executing the file build.sh it tells me that I do not have permissions, I have installed the curl with sudo, also being a root user, I gave all the permissions to the file but it keeps telling me that I do not have permissions, I have tried it in Ubuntu the latest version and in Kali I have also tried it in the latest version but it doesn’t work for me, I searched the internet but there is no solution that helps me so far. thank you very much

Thats the idea. This one is easy, you should figure it out yourself. Maybe is not searching for the solution and more reading about the general documentation.