Zoho creator script

Hi, I need an expert to write a script for a zoho creator database. The task is to get data from some external software and enter the results into my zoho database. This other software has API and webhooks and I believe, although I may be mistaken, that what we need is a Json script to connect the two.
I realise the above description is a little bit vague but I can provide more details to anyone interested in the mission. Ideally, I’d like to know your approximate charge for such a project, I don’t know if it will take one hour or several days. I’ve had to enter a budget figure to complete this listing but I’m flexible with the price if it’s a bigger job than I thought. Please get in contact if you need more details.