Hai friends, I have made an attachment to drive any scooter by using legs. To submit my project, I need to know the force required to turn the scooter steering handle and the minimum force required to apply accelerator, brake. Its very urgent guys. So please tell me minimum force only. Thank you in advance.

You are aware that's something you have to calculate based on what you intend to use.

You are the only one with the specs to your scooter so care to share?

Almost impossible to determine. For example, a longer brake lever would need less force since it changes the ratio on the fulcrum point, in this case, typically a bolt. There is no real "minimum" force. Longer handlebars require less effort but require more swing radius.