How can I make a fillable pdf and install it on a laptop so people can enter their information.

PDF e-forms can be created using Acrobat Pro.

Start by designing a form in any application of your choice such as Microsoft Word, Adobe InDesign, or if you still have the old Adobe Live Cycle Designer. Bring the form to Acrobat as PDF, and let Acrobat to convert drawn boxes to fillable fields, or you may do that manually but I cannot elaborate on this since the whereabouts of some relevant options are in different location in older Acrobat compared to latest Acrobat DC.

The PDF can be distributed to your audience, or as you mentioned you can place the e-form on your laptop for any user to fill it up.