这样?
sum(B4[!0]{B3<=MONTH(today())})
-----------------------------------
固定列
单个单元格判断--if(F3<=month(TODAY()),F4,0)
全部加在一起
if(F3<=month(TODAY()),F4,0)+if(G3<=month(TODAY()),G4,0)+if(H3<=month(TODAY()),H4,0)+if(I3<=month(TODAY()),I4,0)+if(J3<=month(TODAY()),J4,0)+if(K3<=month(TODAY()),K4,0)