Ok.
I will help you find SI unit of force .
First , write equation of force.
Force , F = mass × acceleration.
Now, Si unit of mass = kg
Si unit of acceleration = m/s^2
Hence, SI unit of force = m× a= kg × m/s^2.
Hence, si unit of force is kgm/s^2 .
This unit was named newton, in honor of scientist Issac Newton.
So, SI unit of force =kgm/s^2 = Newton(N).