I owe $499.00 on my original return. Which is due on 07/15/2020. After filing an amendment today I owe $93.00. how does that effect the money I owe on due date?

[JotikaT2]

It doesn't.

Your amended return is prepared taking into account the original return. 

Therefore, the balance due on the amended return only reflects the amount due based upon your changes and assumes you have already paid the amount due with the original return as filed and accepted.

[fanfare]

you should send two checks.

On one write "for 2019 Form 1040"

on the other, write "for 2019 Form 1040-X".

include your SSN and phone number.