How do i make a script compatible with animations (aka knock back) and how to make a click to hit?

ok so heres my script someone helped me with

http://prntscr.com/m8mpkv

and this is my animation

https://gyazo.com/fd1d37a2dbbeb101904438a5d24d2531

help? send me a script that could help if i would have to redo it then thats fine and also how do i make a click to hit with this

http://prntscr.com/m8mqaw

and this

http://prntscr.com/m8mqgb