Syntax Error with Multiple IF and Else if statements

Syntax Error with Multiple IF and Else if statements

I'm pretty new at this, and I can't figure out why I keep getting the "improper statement" error.

I've taken out the specific field names and text, but i've left the structure completely in tact. Any ideas? (the error starts at the beginning of the "If" statement and is an improper statement error.

Status1 = "<TEXT1>";

Status2 = "<TEXT2>";

Status3 = "<TEXT3>";

Status4 = "<TEXT4>";

Status5 = "<TEXT5>";

 

if ( Field 1 != null || Field 2 != null || Field 3 != null )

{             

Bid_Status == Status4

}

else if ( Field 2 != null || Field 1 != null || Field 3 == Null)

{

Bid_Status == Status3

}

else if ( Field 2 == null || Field 1 != null || Field 3 == Null)

{

             Bid_Status == Status3

}

else if ( Field 2 != null || Field 1 == null || Field 3 == Null)

{

            Bid_Status == Status2

}

else if ( Field 2 == null || Field 1 == null || Field 3 == Null)

{

            Bid_Status == Status1

}

else

{

            Bid_Status == Status5

}