Hello! I'm Jen, and I'd be happy to help you out with this issue.
I'm sorry to hear you're experiencing this issue. Please try the following steps and check if it helps. Click Start> Settings > Devices > Select Mouse > click on Additional mouse options > Open the Pointer Options tab > Uncheck the option "Hide the mouse pointer while typing" > click Apply then OK to save changes. Now, check whether the mouse cursor appears this time. Let me know if this works. Thank you.
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.
Best Regards!
Jen :)