Como faço para finalizar uma soma :

Estou somando campos e no final não aparece o valor final..

Como faço ?

I have created a clone version of your form (https://www.jotform.com/63473471573966) on my account to test the issue. There are two main reasons why the Form Calculation widget (Total a Pagar ==>) in your form is not working.

First: There's a "text" in the computation area of the widget.

Related Guide: https://www.jotform.com/help/259-How-to-Perform-Form-Calculation-Using-a-Widget

Second: You have not set calculation values for the two drop-down fields included in the computation of the total.

Related Guide: https://www.jotform.com/help/301-How-to-Assign-Calculation-Value

After you have set calculation values to the dropdown fields in your form and you still want to include the text, "R$ ", to the total, you can use a regular textbox field for the total field and apply conditional logic for the computation.

Below is how the condition should be created: 

I have applied the changes I mentioned above to the clone version of your form below.

https://form.jotform.com/63554790699979

Please feel free to clone the form to your account so you can inspect it better.

I hope this helps. Contact us again anytime if you need any further assistance regarding this.

Thank you.