I  just want to know how long does the battery  on s8 stay after every charge I need to charge mu phone twice or even three times aday

i have s8 and i forgot my pattern but i have fingerprint on and i rememper my samsung account -can i change the pattern?

I have just about an S8 it's a great and new but i have a question that in this app the battery status is good shouldn't it be great?. It's really new I have been using it for 2 days and I didn't have a Samsung phone before so I don't know anythin...