There was no readme in the download so I would like to add the steps:

1.  Disable Antivirus or it will try to delete the patcher
2. Run flstudio_win64_24.2.2.4597.exe and install the software
3. Open it and got to Help > About > Unlock Window > More > Save Validation File and save the file anywhere. It will be a text file
4. Exit FL studio
5. Copy all the files present in «24.2.2.4597_WD» and 'FL Studio_24.2_reg_key.reg' to o the Installation location.
6. Open that text file that you saved in Step 3 and copy the code. Open ID Patcher.exe and paste that code here in ID and click Patch. It should show a success message.
7. Run the FL Studio_24.2_reg_key.reg file
8. Done! Now you can use your software with ease!

Happy remixing :D