To get the IR2110 working in your simulation, you must replicate the standard bootstrap circuit:
Before downloading anything, verify if the component is already in your Proteus installation: Schematic Capture "P" (Pick Devices) in the keywords box. If it appears, select it and click 2. Manual Installation (If Missing) If you have downloaded a third-party file for the IR2110: Locate the Library Folder: Typically found at ir2110 library for proteus 8 upd