Solidity Programmers

1 I need an ERC 20 token so I can use it as currency but I really like loyalty points

2) I need ideally a category of ERC 721 . for example like "Gold" category - but in the "Gold" category I might have 100s of different types of pictures/NFTs

3) I need each Dynamic NFT to hold/transfer/buy/sell the currency in item 1

4) I need the ERC 721 dynamic so I can change the URI to a new image