There is a very good paper on the king names and dates of the Western Kshatrapa coinage: https://people.bu.edu/ptandon/WK-Legends.pdf
I don't think that it's the same coin that you've linked. That one belongs to Bhartrdāman, and the name of the ruler is legible:

I think yours have a different ruler name, but I'm not sure, which. Most of the visible text is just the title of the king and the father of the king, which is very formulaic and pretty much the same. The clue should be the name of the king/father of the king. But that is only partially present on your coin. I think that one of those starts with Rudra…, which is not so helpful, as there are a couple of rulers with that name.
