There might be some typing mistake in your sentence:

“I know something about $BTC , in small I will say small gage in Urdu.”

It’s not clear what you are trying to ask. Maybe you wanted to say:

“Tell me something about $BTC (Bitcoin)”?

Or “Betty Siri”?

Or a “small song”?

Or some cartoon/character?

Please write it correctly once so I can understand what you want information about. I will explain everything in Urdu immediately.

If you want,