I have no water pressure into my home just replaced pump last year. I had pressure yesterday

1. Check the breaker. Has it been tripped?
2. If breaker is good, then pull the cover off the grey switch. Are the points closed or open?
3. Check the pressure gauge. Probably it reads zero, but stranger things have happened.
4. Do you have a water softener or filter? If so, and if the three things above looked good, then use the bypass valve on the filter/softener.

Get back with your results.
BTW, is your pump above ground or in the well?