In simple words
Vrishchika is the Vedic name for the sign Scorpio. It is ruled by Mars and is fixed (steady).
If your Moon was in Vrishchika, read "As your Moon sign". If Vrishchika was rising when you were born, read "As your lagna". Your chart page in Vedic mode shows both.
As your Moon sign
With the Moon in Vrishchika, your feelings run deep and private. You are loyal, perceptive and resilient, and you rarely forget a kindness or a wound. Learning to trust and to let go are lifelong themes.
As your lagna (rising sign)
With Vrishchika rising, you come across as intense, magnetic and reserved. Research, healing and transformation often feature in your life. Your strength grows when you share your inner world with trusted people.
Growing with Vrishchika
Let one old hurt soften this month. Release is a form of power too.
Vedic signs are measured from the stars (the sidereal zodiac), about 24° behind the Western ones. That is why many people's Vedic sign is one sign earlier than their Western sign.