JavaScript (Button) - Auto Installer/Configurator

Please bid after reading. I chat with everyone who reads and saves me time. I am not here to waste yours or my time so please cooperate. Google Analytics JavaScript can be installed in any site easily. No need to ask any question. However, I've a JavaScript which needs to be installed on many websites in form of a specialized button and I need to know 3-4 things from the calling website. - API Key (License), Product Code (SKU/UPC/ unique code which identifies the product that seller is selling), Email Address of the store owner & Product Category (Jewelry, Hotels, Automotive, Furniture, etc.). Mind you - typical website will have many products/categories so we need to get those products programmatically. Challenges - Calling site may have CRM or no CRM.. Product Information could be in class/ID etc. Calling website could be Shopify, PHP, WordPress/WooCommerce, Magento, Opencart, MEAN, .... many ways I want someone to provide me an Auto-Installer-configurator script which I can give to any eCommerce company and that script will ask set of questions and then based on answers, it will install my JavaScript/ Button in the page. Depending on supported number of platforms/ technologies, I can give more budget/ $$. I am not interested to solve only 1 site/technology. This project is for minimum 3 types of hosting sites/technology. Steps involved in my mind: 1) You need to understand how my JavaScript is installed/ configured at present 2) You will need to understand variations based on Shopify, PHP, WooCommerce, etc.. 3) You may integrate my chatbot manually in one or more stores - if you have access to - so you know how it works manually. 4) Now you work on your solution which must help me at least in 3 different technologies/ platform. It is OK to ask what platform/ technology eCommerce store owner is using if we can not detect ourselves. 1) & 2) will need yours 15-30 minutes so I will pass bunch of sites and you will understand on your own. My budget is $250 for each 3 platforms supported.. so do not ask if this doesn't fit your rate/ skills. If you can solve this for more than 3 platforms, I will of course add more budget. We will start with 3 first.