I have 20$ of bitcoin. What should i do with it instead of spending all.Tell me Pls.

The best thing to do is to hold. But I think if that's the case you should buy more Bitcoin because holding that amount will not be that much profitable. The bigger your amount of holding, the bigger your profit will be. Also,at this moment the market value is still low and is just starting to rise. You'll be able to earn bigger profit as itd market value continues to grow.