I think it is time for you to post ALL of your VB app. One thing you should have at the top is Option Explicit which will force you to define the type of every variable that you use. That way, you won't have to post a link and a code snippet to tell me what type a variable is. You will KNOW what type it is.
A useful thing to do is to name variables with the type (or at least a hint as to the type) as part of the name. intPos is good. lngLen is awful, because the type is not implied by the name.
Do not know how long I can say I am a new bie
I presume that you mean you don't know how often you need to say that you are a newbie. I'm trying to help you lose that title. It is not something to be proud of or hung onto tenaciously
If you are now sending name=value data from the Arduino, and I agree that you should, there should be nothing in front of the name or after the value. So, a lot of what you are trying to do is unnecessary. I'd also suggest that tab is not a good end of record marker any more. Get rid of the tab, and use Serial.println() to send the value. Then, in VB look for CR/LF as the end of record marker.
Might I also suggest that none of the values that you were printing were named A1, so making up a name and sending and mapping that name to a field makes no sense. Send the real name. Name the text field in VB to match the name that the value should be stored in.
So, back to the code:
Dim bufferlocA1 As String
Dim ingLen As String
Neither of these should be String. They should be Integer.
Are you familiar with the F1 key in VB? Position the cursor in a function name, or double click the name to highlight the whole name. Press F1 to get help on the function. The Left function takes a string and a value. The first n characters of the specified string are returned by the Left function, which, given the string and the position of the = or colon (whichever separator you use between the name and value on the Arduino) should be the name. The Right function, with the length of the string minus the same value should give you the value (or maybe len - n - 1; you need to experiment).
Use the name to determine which field to store the value string in.