In order to use the NE555P (IC1) to control the IR2110 (U1) gate driver, the output of the NE555P can be used to drive the HIN/LIN (High/Low Input) pins of the IR2110. The specific way in which you might do this largely depends on whether you want to use the timer as an oscillator to generate a PWM signal or some other operation, but here is a high-level description of a possible connection:

Please note: These are high-level connections without consideration to specific parameters of your application such as desired frequency, duty cycle, etc. For detailed setup, ensure to consult datasheet of both NE555P and IR2110 and consider all the necessary factors.

Furthermore, specifications such as how often the transistor is switching (frequency) and what proportion of the time the switch is on (duty cycle) are required to set up the NE555P. Errors in these values could result in overheating or device failure. If you provide me with these parameters, I can help you with the exact values of resistors and capacitors needed for NE555P in the astable mode.

It seems like you're looking for the resistance value in your circuit. The resistors in your schematic are:

Please specify if you want to know about a specific resistor or if you're asking about the total resistance for a section of the circuit.