Various aspects of the best approach (e.g., virtual columns, actions, reverse references) are likely dependent on many aspects of your need and current app design that you haven’t elaborated here. Based on the minimal information you provided, consider starting with an expression like the following in first table’s Amount column’s App formula property.
Ok, euh… i need to update the [amounts] of a table called Tracking, every time a submit a form from a second table called Details, Value from row [Amount], with the type has ids