Translation:तुम पढ़ते हो।
है is used when referring to a single person or when you say तू and हो is used when you say आप or तुम. Ways to conjugate होना = यह है, वह है, ये हैं, वे हैं, मैं हूँ, तू है, तुम हो, हम हैं, आप हो, आप हैं, two ways to use आप depending on level of formality, आप हैं is more formal.
हो is used with तुम.
Note that the three second-person forms in Hindi only vary by how formal/intimate they are. तू is the least formal and is used exclusively with very close friends and family of around the same age as yourself. तुम is of intermediate formality and is used for most people younger than or of the same age. आप is the most formal and is used for people older than you or in a formal/professional context.
Neither तुम or आप is exactly the plural form. They can both be used for multiple people but it is more common to use them for a single person and तुम लोग / आप लोग (you people) as the plural.