It's difficult to answer this question.
We don't know how much you want to invest and how long you are ready to wait before you withdraw funds.
In my opinion, the best time to invest in bitcoin was last year, when bitcoin was around $250.
Now, when bitcoin price is very high, some profit is still possible, but not so big and no so fast as before.
Still, in the long term, you can buy and hold bitcoin, and expect nice profits in the coming years
So, if you have long term goal, yes, it's right time to buy bitcoin.