I need help with the fish tank

I need help mainting this fish tank. It belonged to someone close to me who I have lost recently. I don’t know much about fish tanks, but I would be happy to pay someone to come weekly or biweekly to maintain the tank. Bow front glass aquarium tank with a black frame. It includes a filtration system and integrated lighting. Dimensions are approximately 76 cm wide by 30 cm deep by 46 cm high (30 inches wide by 12 inches deep by 18 inches high). 20/hr