What should my portfolio allocation be? I am in my 20s currently

If you're investing for retirement, the rule of thumb is to have your age be the % of your assets in bonds.

So if you're 25. 25% bonds, 75% equities.

In that 25% I'll have about 15% in investment grade, 10% in high yield bonds.

Certain questions like your risk appetite, investment/savings goals, affordabilty need to be answered first before a recommendation on where you should allocating your money to can be made.

This is just a surface level answer, a more detailed discussion is needed before making a recommendation.