This is a difficult question to answer without first knowing the market rate in your area and what type of photography you specialize in. Generally speaking, portrait photographers charge anywhere from $50-$250+ per session, while event photographers may charge $500-$2000+ for a full day of coverage. Wedding photography rates can vary widely, depending on the experience of the photographer and the size/location of the wedding. For example, a small local wedding might only cost a few hundred dollars, while an all-day affair with lots of extras could cost upwards of $5000.
When deciding how much to charge for your services, it's important to consider your time investment as well as your overhead costs (equipment, props, software, etc.). Once you have a good handle on those factors, you can start researching market rates in your area to get an idea of what others are charging for similar services. From there, you can adjust your prices accordingly - either above or below the competition - to find the sweet spot that works for both you and your clients.