Hello,
VBScript is dying a death and has been for some time. Unless you have a specific reason for using it I'd suggest something (/anything) else. PowerShell is available by default on any recent OS, and it's less flaky than relying on whatever COM libraries are available, e.g. MSXML[x].XMLHTTP, for requests to your API.
> We prefer to work with someone from the UK, but we are open to other countries so long as You have an excellent command of the English Language, both written and verbal
I'm English.
> tight deadlines
Fine, as long as also realistic.
> You must be available for Zoom meetings between the hours of 9:00 am and 5:00pm GMT time zone.
I'm an hour ahead, those times are fine. I'd need some notice though.
> You must be able to demonstrate your skills and provide samples of your work.
I'd be surprised if any candidate has something of VBS handy. I could do something but not the entire solution.
> You will be required to ... commit to delivery milestones and a final deadline, plus ongoing support for the project.
Bids are required to provide the number of days 'This project will be delivered in'. Also, bids require a fixed price. These things mean agreeing to open-ended, ongoing support can't reasonably be expected a part of the bid.
The price and timescale are a guess given that the requirements aren't complete. I'd be happy to provide more realistic values if sufficient details are provided.
Cheers.