how do i calculate the theoretical gain of my common emitter amplifier

my values are as follows

VCC = 12V Beta = 239

VE = 1.2 BV = 1.9 VBE = 0.7 VE = 1.2 RE = 1200 IE = 1mA IC = 1mA

RC = 6kOhmz R1 = 148kOmhz r2 = 28.68KOhmz Re = 1.19KOhmz

C1 10.81 uF C2 = 9.99uF c3 = 93.5uF

any help provided would be aprreciated, some of these values maybe wrong im not very good with electronics hence why i am asking on here

any help provided would be greatly appreciated