Call function help

I hope I am posting this in the right place
I am new to Blockchain, smart contract and web3.
I have done the front end website design someone else is the dev on the project.

I need to add an area on the mint page that allows the user to select from 1 to 15 NFT’s to mint when the mint image button is clicked.
I have googled, look on GitHub and on here and can not find a way to do it. I really need help.

For questions like this, I think you get a faster response on discord.

You must use web3 (or etherjs):

Its basically after you setup web3:

let contract = web3.eth.Contract(abiJson, contractAddress)
//if you have to sign an transaction 
contract.methods.yourFunction().send({from: senderAddress})

If that doesn’t help checkout some examples: