how can I buy agix token on MetaMask
Do you mean this token?
If so, you can use MetaMask swaps in your wallet. Choose what token you want to swap out, and then type in “AGIX” as the token you want to swap to, it looks to be an available option. Please be sure to pay attention to slippage and what are the number of tokens you receive in return to make sure you want to complete the swap.